consisting of alternating characters

#include <stdio.h>

int main()
{
   int n, i;
 
   scanf("%d",&n);
 
 for (i = 1; i <= n; i++) {

        if (i % 2 == 0) {
            printf("-");
        }
        else {
            printf("+");
        }
    }
 
   return 0;
}