Question

How to swap two values of an array in C

Answer 1

#include <stdio.h>

void swap(int* a, int* b) {
    int tmp = *a;
    *a = *b;
    *b = tmp;
}

int main()
{
    int arr[] = { 99, 3, 7, 0, 2, 1, 8, 6 };

    swap(&arr[0], &arr[4]);

    int size = sizeof(arr) / sizeof(arr[0]);

    for (int i = 0; i < size; i++)
        printf("%d ", arr[i]);

    return 0;
}




/*
run:

2 3 7 0 99 1 8 6

*/

 

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