C language: nested for loop realizes ninety-nine multiplication table

 A simple for loop nested case

The only thing to note is: the value of j in the inner for loop must change with the value of i

#include<stdio.h>
int main() {
//   for循环嵌套实现乘法表
for(int i=1;i<=9;i++){
	for(int j=1;j<=i;j++){
		printf("%d*%d=%d\t",i,j,i*j);
	}
	printf("\n");
} 
	return 0;
}