help!!!~

nana111

1. #include <stdio.h>
   
2. void main()
   
3. { char *s="COMPUTER";
   
4.   char c;
   
5.   printf("which style do you want to:\n");
   
6.   printf("Capital (c) or uncapital (a):");
   
7.   c=getchar();
   
8.   if(c='c')
   
9.           puts(s);
   
10.   else
    
11.   { s="computer";
    
12.     puts(s);
    
13.   }
    
14. }

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为什么输入c以外的字母，结果还是COMPUTER?