Question

How to swap the first and last elements of an array in C

Answer 1

#include <stdio.h>

int main(void) {
    int array[] = {7, 8, 9, 0, 3};
    int len = sizeof(array)/sizeof(array[0]);
         
    int x = array[0];
    
    array[0] = array[len - 1];
    array[len - 1] = x;
         
    for (int i = 0; i < len; i++) { 
        printf("%d ", array[i]);
    }
}




/*
run:
   
3 8 9 0 7 
   
*/

 

70+ SQL courses for beginners and professionals