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C Program to Solve Two Sum Using Brute Force (With Algorithm & Output)

 Introduction The Two Sum problem is a popular coding interview question where we must find two indices of an array whose values add up to a given target. This program demonstrates a simple brute-force solution in C using nested loops and dynamic memory allocation. Problem Statement Given an integer array and a target value, return the indices of the two numbers such that they add up to the target. Each input has exactly one solution, and the same element cannot be used twice. The result should return the indices, not the values. If no solution exists, return NULL.  Algorithm / Logic Explanation Start the program. Traverse the array using a loop from index 0 to numsSize - 1 . Inside this loop, use another loop starting from i + 1 to numsSize - 1 . For every pair (i, j) , check if nums[i] + nums[j] == target . If condition becomes true: Allocate memory for 2 integers using malloc() . Store indices i and j . Set returnSize = 2 . Return the result poi...
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C Program to Print Prime Numbers Between Two Numbers

C Program to Print Prime Numbers Between Two Numbers

✅ C Program to Print Prime Numbers Between Two Numbers

#include <stdio.h>
int main( )
{
    int start,end,count,i,j;
    printf("Enter the start and ending values of the prime number:\n");
    scanf("%d %d",&start,&end);
    
    for(i=start;i<end;i++)
    {
        count=0;
        for(j=1;j<=i;j++)
        {
            if(i%j==0)
            {
                count++;
            }
        }
        if(count==2)
        {
            printf("%d ",i);
        }
    }
}

📘 Explanation:

This program prints all prime numbers between two given numbers. A prime number is a number that has exactly two divisors: 1 and itself.

  • Take starting and ending range from the user.
  • For each number in the range, check how many divisors it has.
  • If the count of divisors is exactly 2, it is a prime number.
  • Print the number if it satisfies the prime condition.

🧾 Sample Output:

Enter the start and ending values of the prime number:
10 25
11 13 17 19 23

🔑 Keywords:

C program prime numbers between two numbers, prime number logic in C, number programs in C, C programming examples, beginner C coding problems

📌 Hashtags:

#CProgramming #PrimeNumbers #LearnC #CodingForBeginners #ForLoop #NumberPrograms #1printf

🔍 Search Description:

Learn how to print prime numbers between two given numbers in C using for loop. Simple and beginner-friendly program with explanation and sample output.

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