information-processing-1_13th-class/programs/p49/main.c

#include <stdio.h>

int main(void) {
    int n;

    printf("Input positive integer: ");
    scanf("%d", &n);

    if (n <= 0) {
        return 1;
    }

    int i = 0;

    while (i < n) {
        if (i % 2) {
            putchar('-');
        } else {
            putchar('+');
        }
        i++;
    }

    putchar('\n');

    return 0;
}