square.c

square.c

#include <stdio.h>

int main(int argc, const char *argv[])
{
    int width;
    int i = 0, j = 0;

    /* input section*/
    printf("Input width:");
    scanf("%d", &width);

    /* outer loop(y-axis) */
    while(i < width) {
        /* inner loop(x-axis) */
        while(j < width) {
            if(i != 0 && i != width -1) {
                /* if y-axis is not on edge,
                 * check the y-axis
                 * */
                if(j != 0 && j != width - 1) {
                    /*
                     * if x-axis is not on edge, either
                     * fill with blank.
                     * */
                    printf(" ");
                } else {
                    /* x-axis is on edge,
                     * fill with '*'
                     * */
                    printf("*");
                }
            } else {
                /*                 
                 * y-axis is on edge,
                 * fill with '*'
                 * */
                printf("*");
            }
            /* increment x-axis */
            ++j;
        }
        /* next line, print '\n' and reset x-axis */
        printf("\n");
        j = 0;

        /* increment y-axis */
        ++i;
    }

    return 0;
}