Right here

Write down some tips about for loop.

#include<stdio.h>
int main(){
int T,flag=0;
scanf("%d", &T);
while(T--){
if(flag==1) printf("\n");
else flag=1;

int n,i,j;
scanf("%d", &n);
for(i=1; i<=n; i++){
for(j=i; j<=8; j++)
printf("%d*%d=%d ", i,j,i*j);//这个分号结束属于上一个for的范畴

printf("%d*%d=%d\n", i,j,i*j);//这个语句不会被循环


}
}
return 0;
}

ok….
Come on! little fish.