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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 Separate Even and Odd Numbers from an Array

🔢 C Program to Separate Even and Odd Numbers from an Array

#include<stdio.h>
int main()
{
    int num;
    printf("Enter the size of the array:\n");
    scanf("%d",&num);
    if(num<=0)
    {
        printf("!invalid array size:\n");
        return 1;
    }
    int a[num],even[num],odd[num];
    int evencount=0,oddcount=0;
    printf("Enter %d Elements in an array:\n",num);
    for(int i=0;i<num;i++)
    {
        scanf("%d",&a[i]);
        
        if(a[i]%2==0)
        {
            even[evencount++]=a[i];
        }
        else
        {
            odd[oddcount++]=a[i];
        }
    }
    printf("Even numbers are:\n");
    for(int i=0;i<evencount;i++)
    {
        printf("%d ",even[i]);
    }
    printf("\nOdd numbers are:");
    for(int i=0;i<oddcount;i++)
    {
        printf("%d ",odd[i]);
    }
}

📝 Explanation:

This C program reads n integers into an array and separates them into two arrays: one for even numbers and another for odd numbers. It then displays them separately.

💡 Sample Output:

Enter the size of the array:
6
Enter 6 Elements in an array:
1 2 3 4 5 6
Even numbers are:
2 4 6 
Odd numbers are:
1 3 5

🔍 Keywords:

even odd separation C program, split even and odd, C array even odd, separate numbers C, odd even logic in C

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