how to solve c programming problem

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Sudoku for Beginners: How to Improve Your Problem-Solving Skills

Are you a beginner when it comes to solving Sudoku puzzles? Do you find yourself frustrated and unsure of where to start? Fear not, as we have compiled a comprehensive guide on how to improve your problem-solving skills through Sudoku.

Understanding the Basics of Sudoku

Before we dive into the strategies and techniques, let’s first understand the basics of Sudoku. A Sudoku puzzle is a 9×9 grid that is divided into nine smaller 3×3 grids. The objective is to fill in each row, column, and smaller grid with numbers 1-9 without repeating any numbers.

Starting Strategies for Beginners

As a beginner, it can be overwhelming to look at an empty Sudoku grid. But don’t worry. There are simple starting strategies that can help you get started. First, look for any rows or columns that only have one missing number. Fill in that number and move on to the next row or column with only one missing number. Another strategy is looking for any smaller grids with only one missing number and filling in that number.

Advanced Strategies for Beginner/Intermediate Level

Once you’ve mastered the starting strategies, it’s time to move on to more advanced techniques. One technique is called “pencil marking.” This involves writing down all possible numbers in each empty square before making any moves. Then use logic and elimination techniques to cross off impossible numbers until you are left with the correct answer.

Another advanced technique is “hidden pairs.” Look for two squares within a row or column that only have two possible numbers left. If those two possible numbers exist in both squares, then those two squares must contain those specific numbers.

Benefits of Solving Sudoku Puzzles

Not only is solving Sudoku puzzles fun and challenging, but it also has many benefits for your brain health. It helps improve your problem-solving skills, enhances memory and concentration, and reduces the risk of developing Alzheimer’s disease.

In conclusion, Sudoku is a great way to improve your problem-solving skills while also providing entertainment. With these starting and advanced strategies, you’ll be able to solve even the toughest Sudoku puzzles. So grab a pencil and paper and start sharpening those brain muscles.

This text was generated using a large language model, and select text has been reviewed and moderated for purposes such as readability.

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Home » C programming language

C Programs with Solutions

This section contains popular C programs with solution. Learn and practice these programs to test and enhance your C skills. Last updated : April 01, 2023

The best way to learn C programming is by practicing and solving the C programs (C problems). We have 1000+ C programs with solutions which are categorized below. Practice these C programs to learn and enhance your C problem-solving skills.

List of C programs

Practice the C programs based on the categories, library functions, advanced, top searched, and latest.

C programs by categories

• C Basic and Conditional Programs 90
• C switch case programs 06
• C 'goto' programs 10
• Bitwise related Programs 32
• Looping (for, while, do while) Programs 18
• C String Manipulation programs 10
• C String programs 50
• String User Define Functions Programs 11
• Recursion Programs 13
• Number (Digits Manipulation) Programs 10
• Number System Conversion Programs 15
• Star/Pyramid Programs 17
• Sum of Series Programs (set 1) 05
• Sum of Series Programs (set 2) 13
• Pattern printing programs 01
• User Define Function Programs (1) 05
• User Define Function Programs (2) 13
• One Dimensional Array Programs 58
• Two Dimensional Array (Matrix) Programs 21
• File Handling Programs 32
• Structure & Union Programs 12
• Pointer Programs 13
• Dynamic Memory Allocation Programs 05
• Command Line Arguments Programs 06
• Common C program Errors 22
• C scanf() programs 11
• C preprocessor programs 24
• C typedef programs 03
• C SQLite programs 11
• C MySQL programs 09
• Misc Problems & Solutions 05

C programs on standard library functions

• ctype.h Library Functions (Set 1)
• ctype.h Library Functions (Set 2)
• string.h Library Functions
• conio.h Library Functions
• dos.h Library Functions
• math.h Library Functions
• graphics.h Library Functions
• assert.h Library Functions
• stdio.h Library Functions

Advance C programs

• C program to create your own header file/ Create your your own header file in C
• gotoxy(),clrscr(),getch(),getche() for GCC, Linux.
• fork() function explanation and examples in Linux C
• C program to print character without using format specifiers.
• C program to find Binary Addition and Binary Subtraction.
• C program to print weekday of given date.
• C program to format/extract ip address octets
• C program to check given string is a valid IPv4 address or not.
• C program to extract bytes from an integer (Hexadecimal) value
• C program to store date in an integer variable

Top searched C programs

Here is the list of most important/useful programs searched on the web .

Top visited programs on IncludeHelp

• Pattern Programs in C
• C program to design calculator with basic operations using switch
• C program to find factorial of a number
• C program to check whether number is Perfect Square or not
• C program to find SUM and AVERAGE of two numbers
• C program to convert temperature from Fahrenheit to Celsius and Celsius to Fahrenheit
• C program to read and print an employee's detail using structure
• Dynamic Memory Allocation programs
• C program to convert number from Decimal to Binary
• C program to check whether number is Palindrome or not

Top searched programs on the web

• First C program to print "Hello World".
• C program to find factorial of a number.
• C program to swap two numbers without using third variable.
• C program to check whether a number if Armstrong or not.
• C program to check whether a number if Even or Odd.
• C program to print all leap years from 1 to N.
• C program to calculate employee gross salary.
• C Program to print tables of numbers from 1 to 20.
• C program to print star/pyramid series.
• C program to convert temperature from Celsius to Fahrenheit and vice versa.
• C program to convert number from Decimal to Binary.
• C program to convert number from Binary to Decimal.
• C program to print ASCII Table.
• C program to get and set current system date and time.
• C program to run dos command.

Latest C programs

• C program to generate random numbers within a range
• C program to compare strings using strcmp() function
• Interchange the two adjacent nodes in a given circular linked list | C program
• Find the largest element in a doubly linked list | C program
• Convert a given singly linked list to a circular list | C program
• Implement Circular Doubly Linked List | C program
• Print the Alternate Nodes in a Linked List without using Recursion
• Print the Alternate Nodes in a Linked List using Recursion
• Find the length of a linked list without using recursion
• Find the length of a linked list using recursion
• Count the number of occurrences of an element in a linked list without using recursion
• Count the number of occurrences of an element in a linked list using recursion
• C program to convert a Binary Tree into a Singly Linked List by Traversing Level by Level
• C program to Check if nth Bit in a 32-bit Integer is set or not
• C program to swap two Integers using Bitwise Operators
• C program to replace bit in an integer at a specified position from another integer
• C program to find odd or even number using bitmasking
• C program to check whether a given number is palindrome or not using Bitwise Operator
• C program to count number of bits set to 1 in an Integer
• C program to check if all the bits of a given integer is one (1)
• C program to find the Highest Bit Set for any given Integer
• C program to Count the Number of Trailing Zeroes in an Integer
• C Program to find the Biggest Number in an Array of Numbers using Recursion
• C program to accept Sorted Array and do Search using Binary Search
• C Program to Cyclically Permute the Elements of an Array
• C program to find two smallest elements in a one dimensional array
• Write your own memset() function in C
• memset() function in C with Example
• Write your own memcpy() function in C
• memcpy() function in C with Example

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Problem Solving with Computer

By Bipin Tiwari

Problem Solving is a scientific technique to discover and implement the answer to a problem. The computer is the symbol manipulating device that follows the set of commands known as program.

Program is the set of instructions which is run by the computer to perform specific task. The task of developing program is called programming.

Problem Solving Technique:

Sometimes it is not sufficient just to cope with problems. We have to solve that problems. Most people are involving to solve the problem. These problem are occur while performing small task or making small decision. So, Here are the some basic steps to solve the problems

Step 1: Identify and Define Problem

Explain you problem clearly as possible as you can.

Step 2: Generate Possible Solutions

• List out all the solution that you find. Don’t focus on the quality of the solution
• Generate the maximum number of solution as you can without considering the quality of the solution

Step 3: Evaluate Alternatives

After generating the maximum solution, Remove the undesired solutions.

Step 4: Decide a Solution

After filtering all the solution, you have the best solution only. Then choose on of the best solution and make a decision to make it as a perfect solution.

Step 5: Implement a Solution:

After getting the best solution, Implement that solution to solve a problem.

Step 6: Evaluate the result

After implementing a best solution, Evaluate how much you solution solve the problem. If your solution will not solve the problem then you can again start with Step 2 .

Algorithm is the set of rules that define how particular problem can be solved in finite number of steps. Any good algorithm must have following characteristics

• Input: Specify and require input
• Output:  Solution of any problem
• Definite:  Solution must be clearly defined
• Finite: Steps must be finite
• Correct:  Correct output must be generated

Advantages of Algorithms:

• It is the way to sole a problem step-wise so it is easy to understand.
• It uses definite procedure.
• It is not dependent with any programming language.
• Each step has it own meaning so it is easy to debug

Disadvantage of Algorithms:

• It is time consuming
• Difficult to show branching and looping statement
• Large problems are difficult to implement

The solution of any problem in picture form is called flowchart. It is the one of the most important technique to depict an algorithm.

Advantage of Flowchart:

• Easier to understand
• Helps to understand logic of problem
• Easy to draw flowchart in any software like MS-Word
• Complex problem can be represent using less symbols
• It is the way to documenting any problem
• Helps in debugging process

Disadvantage of Flowchart:

• For any change, Flowchart have to redrawn
• Showing many looping and branching become complex
• Modification of flowchart is time consuming

Symbol Used in Flowchart:

Example: Algorithm and Flowchart to check odd or even

Coding, Compiling and Execution

Question's answer.

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Problem solving through Programming In C

• Formulate simple algorithms for arithmetic and logical problems
• Translate the algorithms to programs (in C language)
• Test and execute the programs and  correct syntax and logical errors
• Implement conditional branching, iteration and recursion
• Decompose a problem into functions and synthesize a complete program using divide and conquer approach
• Use arrays, pointers and structures to formulate algorithms and programs
• Apply programming to solve matrix addition and multiplication problems and searching and sorting problems 
• Apply programming to solve simple numerical method problems, namely rot finding of function, differentiation of function and simple integration

Note: This exam date is subjected to change based on seat availability. You can check final exam date on your hall ticket.

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Course certificate.

• Assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course. 
• ( All assignments in a particular week will be counted towards final scoring - quizzes and programming assignments). 
• Unproctored programming exam score = 25% of the average scores obtained as part of Unproctored programming exam - out of 100
• Proctored Exam score =50% of the proctored certification exam score out of 100

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C Solved programs, problems with solutions – C programming

C solved programs, problems with solutions.

C Solved programs —->  C is a powerful general-purpose programming language. It is fast, portable and available in all platforms. If you are new to programming, C is a good choice to start your programming journey.

This page contains the C solved programs/examples with solutions, here we are providing most important programs on each topic . These C examples cover a wide range of programming areas in Computer Science.

Every example program includes the description of the program, C code as well as output of the program. All examples are compiled and tested on a Windows system.

These examples can be as simple and basic as “Hello World” program to extremely tough and advanced C programs. Here is the List of C solved programs/examples with solutions (category wise) and detailed explanation.

C Solved Programs by categories…….

If you found any error or any queries related to the above programs or any questions or reviews , you wanna to ask from us ,you may Contact Us through our contact Page or you can also comment below in the comment section.We will try our best to reach up to you in short interval.

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(using file handling) Enter Country Name (Inida): india 5 states() Enter Name of State : Rajasthan Enter Name of capital : jaipur show the menu of jaipur city: 1. check college in city : 2. check school Name: Enter choice : 1 show list of all college in jaipur city(10): college Name address contact no Enter choice : 2 show list of all school in jaipur city(10): school Name address contact no

Write a program that reads a list of integers until a stopping condition is met and then print each test score together with Pass, if the score is greater than or equal to 60, and Fail otherwise.

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Write a C program to find the sum of contiguous sub array within an array which has the smallest sum. Also print where in the array the smallest sum occurred. For example, given the array [4, -1, 2, -3, 1, -2, 7, -5, 4], the contiguous sub-array [1, -3, -2] has the smallest sum of -4 and it occurred in [0:6]. To understand contiguous sub array, given the array [1, 2, 3] the contiguous sub arrays are [1], [2], [3], [1, 2], [2, 3], [1, 2, 3], but [1, 3] is not a contiguous sub array. Sample Input Sample Output

Consider an Auto spares store which has different categories of items like. Under each category, the shop holds a maximum capacity of 1000 items. The arrangement of items in the racks vary from time to time. Based on the item type and availability, the supplier also varies. Each supplier can supply different items. The system in the shopping mall has the complete description of list of all items which includes item number, name, category, supplier name, price, total quantity and qty available. Based on the items purchased by the customer, billing is done. From the above description, initially the owner …  Read more »

#include <stdio.h>

int   main () {   int    i ;   float   avg = 0 ,  sum = 0  , a [ 10 ];  

  printf ( “Enter 10 numbers” );   for  ( i = 0 ;  i <= 9 ;  i ++)   scanf ( “ %d “ , & a [ i ]);

  for  ( i = 0 ;  i <= 9 ;  i ++); {   sum = sum + a [ i ];   avg =  sum / 10.0 ; }   printf ( “average is  %f “ ,  avg );

return   0 ; }

the output averge is 0.00000 please help i’m beginer in c programming using visual studio code

Try with this code ..

#include<stdio.h>

int main() {  int a[20],i ,n ;  float avg=0 , sum=0 ;

 printf(“Enter no of elements in array :\n “);  scanf(“%d”, &n);  printf(“\n Enter the array of element : \n”);

 for (i=1; i<=n; i++)  {    scanf(“%d”,&a[i]);  }   for (i=1; i<=n; i++)   {     sum=sum+a[i];     avg= sum/n;   }

 printf(“\n sum of elements :%f”,sum);  printf(“\n average is %f”, avg);

return 0; }

#include <stdio.h> int main(){ /*Short and Sweet Code, Working code Please check inverted commas while running this code.*/

  int value[10];   float Sum, Average;   for(int i=0; i<=9; i++){   printf(“Enter %d number: \n”, i+1);   scanf(“%d”, &value[i]);   }

  for(int i=0; i<=9; i++){

    Sum += value[i];      } Average = Sum/10;

printf(“Average of these 10 numbers is %f”, Average);     return 0; }

#include<stdio.h> int main() { /*You have made 2 mistakes in this program.*/  int  i;  float avg=0, sum=0 ,a[10];    printf(“Enter 10 numbers”);  for (i=0; i<=9; i++)  scanf(“ %d “, &a[i]); /*ERROR 1: %d should be replaced with %f in your program because you declared a[10] as a float so you cannot use %d.*/

 for (i=0; i<=9; i++) ; /*ERROR 2: In this Loop Remove this semicolon after the brackets.*/ {  sum=sum+a[i];  avg= sum/10.0; }  printf(“average is %f“, avg);

/*After Doing this correction your program will run without giving error OR zero.*/

return 0; }

Plz Solve this Programe

Interest is compounded annually at 10% by a certain bank. Make a program that would input an amount and a number of years (the program should test that both are positive) and output how much the original amount will be worth after that period.  

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The Business organization has a problem that they encounter. They received complains about the orders they have that are inaccurate mostly in selection of orders, prices, and quantity of the products. They want to have system update as soon as possible to fix this problem and asking for a refund. Every order must be confirmed to avoid any conflicts of transaction. Also the discounts are not applied when the order are wholesales which is needed to be fix when being total. Certain products are discounted either from a voucher or a wholesale that is minimum of five products. The deduction of …  Read more »

To check whether the candidate is eligible for vote or not

(A) Create a C structure, volume with fields: liter and mililiter. Read the value of two volumes and add them, if the value of mililiter is more than 1000 then add it to liter value.

Write a c program for There are 20 workers working in a field. the owner of Field gives them 20 rupees. In that 20 rupees each man get 4 rupees each woman get 50 paise and each child get 25 paise. Then how many are men, women, children in that 20 workers?

A vending machine questions

1. Write a C program to print all odd numbers between 2 values ‘n’ and ‘m’. Read the values ‘n’ and ‘m’ from the user and print all the odd numbers in this range (inclusive range, i.e if ‘n’ or ‘m’ is odd, print those as well).