用for语句写一个循环

Question

 

Answer 1

#include "stdio.h"

int main(){
    int i,j;

    for(i=1;i<=5;i++){
        for(j=1;j<=5;j++){
            if(j<=i){
                printf("%d",j);
            }else{
                printf("*");
            }
        }
        printf("\n");
    }
    return 0;
}