谁来帮帮我~C程式!!(急)

原帖由 goodhermit95 于 2009-10-28 09:27 PM 发表
前面为什么要int i?

1. #include <stdio.h>
   
2. 
   
3. int main()
   
4. {
   
5. 
   
6.         for (int i = 1; i <= 100; i++)
   
7.                 i % 10 == 0 ? printf("\n") : printf("*");
   
8. 
   
9.         return 0;
   
10. }

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1. 
   
2. C:\Users\Dhilip89\Desktop>cl star.c
   
3. Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 15.00.30729.01 for 80x86
   
4. Copyright (C) Microsoft Corporation.  All rights reserved.
   
5. 
   
6. star.c
   
7. star.c(6) : error C2065: 'i' : undeclared identifier
   
8. star.c(6) : error C2065: 'i' : undeclared identifier
   
9. star.c(6) : error C2065: 'i' : undeclared identifier
   
10. star.c(7) : error C2065: 'i' : undeclared identifier
    
11. 
    
12. C:\Users\Dhilip89\Desktop>cl star.c
    
13. Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 15.00.30729.01 for 80x86
    
14. Copyright (C) Microsoft Corporation.  All rights reserved.
    
15. 
    
16. star.c
    
17. star.c(6) : error C2065: 'i' : undeclared identifier
    
18. star.c(6) : error C2065: 'i' : undeclared identifier
    
19. star.c(6) : error C2065: 'i' : undeclared identifier
    
20. star.c(7) : error C2065: 'i' : undeclared identifier

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1. #include <stdio.h>
   
2. 
   
3. int main()
   
4. {
   
5.         int i;
   
6. 
   
7.         for (i = 1; i <= 100; i++)
   
8.                 i % 10 == 0 ? printf("\n") : printf("*");
   
9. 
   
10.         return 0;
    
11. }

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1. C:\Users\Dhilip89\Desktop>cl star.c
   
2. Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 15.00.30729.01 for 80x86
   
3. Copyright (C) Microsoft Corporation.  All rights reserved.
   
4. 
   
5. star.c
   
6. Microsoft (R) Incremental Linker Version 9.00.30729.01
   
7. Copyright (C) Microsoft Corporation.  All rights reserved.
   
8. 
   
9. /out:star.exe
   
10. star.obj
    
11. 
    
12. C:\Users\Dhilip89\Desktop>star
    
13. *********
    
14. *********
    
15. *********
    
16. *********
    
17. *********
    
18. *********
    
19. *********
    
20. *********
    
21. *********
    
22. *********

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