invalid char to char conversion?

This is a discussion on invalid char to char conversion? within the Windows Programming forums, part of the Platform Specific Boards category; invalid char to char(pointer) conversion? here is what i tried. devcpp. winnapp. Code: char *buff; buff = (char*)GlobalAlloc( GPTR, textlen ...

  1. #1
    Registered User kryptkat's Avatar
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    invalid char to char conversion?

    invalid char to char(pointer) conversion?

    here is what i tried.

    devcpp. winnapp.
    Code:
      char    *buff;
    
     buff = (char*)GlobalAlloc( GPTR, textlen + 1);
    
    
    
       buff =   buff[strcspn ( buff, "\n" )] = '\0'; 
    
    get error
    
    2668 C:\Dev-Cpp\Project6\main.c invalid conversion from `char' to `char*' 
    
         buff =   GPTR buff[strcspn ( buff, "\n" )] = '\0'; 
    
    get error
    
    2668 C:\Dev-Cpp\Project6\main.c invalid conversion from `int' to `char*' 
    
         buff =   GPTR buff[strcspn ( GPTR buff, "\n" )] = '\0';
    
    2668 C:\Dev-Cpp\Project6\main.c invalid conversion from `int' to `char*' 
    
    
    
      buff =    buff[strcspn ( GPTR buff, "\n" )] = '\0'; 
    
    2668 C:\Dev-Cpp\Project6\main.c expected `)' before "buff" 
    
    
    
         buff =    buff[strcspn ( (GPTR) buff, "\n" )] = '\0';  
    
    2668 C:\Dev-Cpp\Project6\main.c expected `)' before "buff" 
    
    
       buff =  (GPTR)  buff[strcspn ( (GPTR) buff, "\n" )] = '\0';
    
    2668 C:\Dev-Cpp\Project6\main.c invalid conversion from `int' to `char*' 
    
    
         buff =    buff[strcspn ( (char *) buff, "\n" )] = '\0';  
    
    2668 C:\Dev-Cpp\Project6\main.c invalid conversion from `char' to `char*' 
    
    
     buff =    buff[strcspn (  &buff, "\n" )] = '\0';  
    
    2668 C:\Dev-Cpp\Project6\main.c cannot convert `char**' to `const char*' for argument `1' to `size_t strcspn(const char*, const char*)' 
    
        buff =    buff[strcspn (  buff, '\n' )] = '\0';  
    
    2668 C:\Dev-Cpp\Project6\main.c invalid conversion from `char' to `const char*' 
    
      buff =    buff[strcspn (  buff, "\n" )] = "\0";  
    
    2668 C:\Dev-Cpp\Project6\main.c invalid conversion from `const char*' to `char' 
    
     buff =    buff[strcspn (  buff, (char *) "\n" )] = '\0';
    
    2668 C:\Dev-Cpp\Project6\main.c invalid conversion from `char' to `char*' 
    
    and back to the origial 
    
     buff =    buff[strcspn (  buff,  "\n" )] = '\0'; 
    
    
      (char pointer ==> buff)  =  (char pointer ==> buff)[strcspn( (char pointer ==> buff) , (string ==> "\n" ) )] = ( char ==> '\0' ) ;
    
    so....
    
      buff =    buff[strcspn (  buff,  "\n" )] = GPTR '\0';
    
    after adding (char *) one at a time then compile each of the three
    
     buff =    (char *) buff[strcspn (  buff, (char *) "\n" )] = (char *) '\0'; 
    
    get error
    
    2668 C:\Dev-Cpp\Project6\main.c [Warning] cast to pointer from integer of different size 
    
    <wimpers> arrrrgggghhhh! This prog needz a flee bath! </wimpers>

  2. #2
    and the hat of wrongness Salem's Avatar
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    > buff = buff[strcspn ( buff, "\n" )] = '\0';
    What exactly were you hoping to achieve here?

    I mean, why are you trying to update the buff pointer itself, when all you're doing is zeroing out the newline.

    In other words, try
    buff[strcspn ( buff, "\n" )] = '\0';
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.
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  3. #3
    Registered User kryptkat's Avatar
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    Yay! that worked! was trying to replace the '\n' with '\0' in a winnapp.

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