C语言循环for嵌套输出矩阵

#include <stdio.h>

int main(){
   
   int a=0, b=0;
   printf("输入矩阵的行和列：");
   scanf("%d %d", &a, &b);

   for (int i = 1; i <= a; i++)
   {
      for (int j = 1; j <= b; j++)
      {
         printf("%-6d", i * j);
      }
      printf("\n");
      
   }
   
    return 0;
}