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  1. #include <stdio.h>
  2.  
  3. int main(void)
  4. {
  5.     int i, j;
  6.  
  7.     //1단부터 3단 출력
  8.     for (i = 1; i <= 9; i++)
  9.     {
  10.         for (j = 1; j <= 3; j++)
  11.         {
  12.             printf("%2d x %2d = %2d   ", j, i, j * i);
  13.         }
  14.         printf("\n");
  15.     }
  16.     printf("\n");
  17.  
  18.     //4단부터 6단 출력
  19.     for (i = 1; i <= 9; i++)
  20.     {
  21.         for (j = 4; j <= 6; j++)
  22.         {
  23.             printf("%2d x %2d = %2d   ", j, i, j * i);
  24.         }
  25.         printf("\n");
  26.     }
  27.     printf("\n");
  28.  
  29.     //7단부터 9단 출력
  30.     for (i = 1; i <= 9; i++)
  31.     {
  32.         for (j = 7; j <= 9; j++)
  33.         {
  34.             printf("%2d x %2d = %2d   ", j, i, j * i);
  35.         }
  36.         printf("\n");
  37.     }
  38.     printf("\n");
  39.  
  40.     return 0;
  41. }
Success #stdin #stdout 0s 2292KB
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stdout
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 1 x  1 =  1    2 x  1 =  2    3 x  1 =  3   
 1 x  2 =  2    2 x  2 =  4    3 x  2 =  6   
 1 x  3 =  3    2 x  3 =  6    3 x  3 =  9   
 1 x  4 =  4    2 x  4 =  8    3 x  4 = 12   
 1 x  5 =  5    2 x  5 = 10    3 x  5 = 15   
 1 x  6 =  6    2 x  6 = 12    3 x  6 = 18   
 1 x  7 =  7    2 x  7 = 14    3 x  7 = 21   
 1 x  8 =  8    2 x  8 = 16    3 x  8 = 24   
 1 x  9 =  9    2 x  9 = 18    3 x  9 = 27   

 4 x  1 =  4    5 x  1 =  5    6 x  1 =  6   
 4 x  2 =  8    5 x  2 = 10    6 x  2 = 12   
 4 x  3 = 12    5 x  3 = 15    6 x  3 = 18   
 4 x  4 = 16    5 x  4 = 20    6 x  4 = 24   
 4 x  5 = 20    5 x  5 = 25    6 x  5 = 30   
 4 x  6 = 24    5 x  6 = 30    6 x  6 = 36   
 4 x  7 = 28    5 x  7 = 35    6 x  7 = 42   
 4 x  8 = 32    5 x  8 = 40    6 x  8 = 48   
 4 x  9 = 36    5 x  9 = 45    6 x  9 = 54   

 7 x  1 =  7    8 x  1 =  8    9 x  1 =  9   
 7 x  2 = 14    8 x  2 = 16    9 x  2 = 18   
 7 x  3 = 21    8 x  3 = 24    9 x  3 = 27   
 7 x  4 = 28    8 x  4 = 32    9 x  4 = 36   
 7 x  5 = 35    8 x  5 = 40    9 x  5 = 45   
 7 x  6 = 42    8 x  6 = 48    9 x  6 = 54   
 7 x  7 = 49    8 x  7 = 56    9 x  7 = 63   
 7 x  8 = 56    8 x  8 = 64    9 x  8 = 72   
 7 x  9 = 63    8 x  9 = 72    9 x  9 = 81
https://ideone.com/7Ac3AG
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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