C语言实现打印乘法口诀表

程序代码：

for循环嵌套

#include <stdio.h>int main(){for(int i=1;i<=9;i++){for(int j=1;j<=i;j++){printf("%dx%d=%d ",i,j,i*j);}printf("\n");}return 0;}

while循环嵌套

#include <stdio.h>int main(){int i = 1;int j = 1;while(i<=9){while(j<=i){printf("%dx%d=%d ",i,j,i*j);j++;}printf("\n");j = 1;//换行后从1开始i++;}return 0;}

do---while循环嵌套

#include <stdio.h>int main(){int i = 1;int j = 1;do{do{printf("%dx%d=%d ",i,j,i*j);j++;}while(j<=i);printf("\n");j = 1;//换行后从1开始i++;}while(i<=9);return 0;}

执行结果：