编辑代码

#include <stdio.h>
void printRectangle(int width, int height) {
    int i = 0;
    for(; i < height; i++){
        for(int j = 0; j < width; j++){
        if(i == 0 || i == height || j == 0 || j == width) {
            printf("#");
            }
        }
        printf("\n");
    }
    return;
}

int main() {
    int width;
    int height;
    scanf("%d %d", &width, &height);
    printRectangle(width, height);
    return 0;
}