第 6 章 C控制语句：循环

 1 #include <stdio.h>
 2 
 3 int main()
 4 {
 5     const int ROWS = 6;
 6 
 7     for (int row(0); row != ROWS; ++row)
 8     {
 9         for (char ch(‘F‘); ch >= ‘F‘ - row; --ch)
10             printf("%c",ch);
11 
12         printf("\n");
13     }
14 
15     return 0;
16 }

 1 #include <stdio.h>
 2 
 3 int main()
 4 {
 5     const int ROWS = 6;
 6     const int COLS = 6;
 7     char ch = ‘A‘;
 8     
 9     for (int row(0); row != ROWS; ++row)
10     {
11         for (int col(0); col <= row; ++col, ++ch)
12             printf("%c", ch);
13 
14         printf("\n");
15     }
16 
17     return 0;
18 }