C语言基础：for循环示范代码，字符循环和浮点数循环

C语言基础：for循环演示代码，字符循环和浮点数循环

#include <stdio.h>
int main ()
 {
   char letter;
   float percent;
   for (letter = 'A'; letter <= 'Z'; letter++)
     putchar(letter);
   for (letter = 'z'; letter >= 'a'; letter--)
     putchar(letter);
   putchar('\n');
   for (percent = 0.0; percent < 1.0; percent += 0.1)
     printf("%3.1f\n", percent);
return 1;
 }

gcc编译运行结果

ABCDEFGHIJKLMNOPQRSTUVWXYZzyxwvutsrqponmlkjihgfedcba
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9