﻿ C : Find four array elements whose sum equals given number

# C Exercises: Find four array elements whose sum is equal to given number

## C Array: Exercise-78 with Solution

Write a program in C to find four array elements whose sum is equal to a given number.

Visual Presentation:

Sample Solution:

C Code:

``````#include <stdio.h>

// Function to find and print four elements whose sum is equal to a given value
void sumOfFourElements(int *arr1, int size, int SUM) {
int i, j, k, l;
printf("The elements are:  \n");

// Four nested loops to iterate through combinations of elements
for (i = 0; i < size - 3; i++) {
for (j = i + 1; j < size - 2; j++) {
for (k = j + 1; k < size - 1; k++) {
for (l = k + 1; l < size; l++) {
// Check if sum of selected elements equals the given SUM
if (arr1[i] + arr1[j] + arr1[k] + arr1[l] == SUM) {
printf("%d, %d, %d, %d\n", arr1[i], arr1[j], arr1[k], arr1[l]);
return; // Found the elements, print them and return
}
}
}
}
}
printf("No such elements found for the given sum.\n");
}

int main() {
int arr1[] = {3, 7, 1, 9, 15, 14, 6, 2, 5, 7};
int sumGiven = 37;
int n = sizeof(arr1) / sizeof(arr1[0]);
int i;

// Print the original array
printf("The given array is:  \n");
for (i = 0; i < n; i++) {
printf("%d  ", arr1[i]);
}
printf("\n");

// Find and print four elements whose sum is equal to sumGiven
sumOfFourElements(arr1, n, sumGiven);
return 0;
}
```
```

Sample Output:

```The given array is:
3  7  1  9  15  14  6  2  5  7
The elements are:
3, 15, 14, 5
```

Flowchart:

C Programming Code Editor:

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