输出4*5的数列

1 2 3 4 5 

2 4 6 8 10 

3 6 9 12 15 

4 8 12 16 20

 

 1 int main()
 2 {
 3       int i, j;
 4       for (i = 1; i <= 4; i++)
 5       {
 6            for (j = 1; j<=5; j++)
 7                   printf("%2d ", i*j);
 8          
 9            printf("\n");
10       }
11 }        

 

转载于:https://www.cnblogs.com/liweilijie/p/4801179.html