九九乘法表
#include <stdio.h>
int main() {int n;printf("请输入一个正整数：\n");scanf("%d",&n);int i,j;i = 1;while (i <= n){j = 1;while (j <=i){printf("%d*%d=%d",j,i,j*i);if (j*i < 10){printf(" ");}else{printf(" ");}j++;}printf("\n"); i++; }return 0;
}
输入9的时候是九九乘法表，输入其他……
