HDU2052 Picture

#include <stdio.h>intmain(int argc, char **argv) {    int n, m, i , j;    while (scanf("%d%d", &n, &m) == 2) {        printf("+");        for (i = 1; i <= n; ++ i) printf("-");        printf("+\n");        for (j = 1; j <= m; ++ j) {            printf("|");            for (i = 1; i <= n; ++ i) printf(" ");            printf("|\n");        }        printf("+");        for (i = 1; i <= n; ++ i) printf("-");        printf("+\n\n");    }    return 0;}