Using the red OR the green will have the same result (will access the struct in the same way)?
Code:#include <stdio.h> struct Info{ float amount; char fname[30]; char lname[30]; }rec; int main(void){ struct Info rec; printf("Enter the whole name:\n"); scanf("%s %s", rec.fname, rec.lname); printf("Please now enter the amount:\n"); scanf("%f", &rec.amount); printf("Mr %s %s gave an amount of %.2f $.\n", rec.fname, rec.lname, rec.amount); return 0; }
It should... just don't try red AND green, your compiler will rebel.Originally Posted by brack
Last edited by CommonTater; 09-03-2010 at 04:48 PM. Reason: oops....
Well, one difference is that the green version makes the struct object global, which may be undesirable.
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Anyway this is why i said OR...thanks for your answer...
Last edited by brack; 09-03-2010 at 04:52 PM.
So althoung It depends from the program, most times i should use the red one...?
Yes.
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Why would it rebel? It might be kind enough to give you a warning that you are reusing a file global variable variable name for a local automatic variable. It also may be kind enough to give you a warning that the global struct rec with external linkage and static duration is unused. But it is perfectly fine from the compiler's point of view for a local automatic variable to have the same name rec as a file global variable. Hopefully, your code reviewers would rebel because it is hard to maintain code that uses the same name for a variable as a file global and a local variable.
Last edited by pheininger; 09-03-2010 at 09:22 PM.
It should also be stated that you should not use scanf to read strings. You should use fgets.
SourceForge.net: Scanf woes - cpwiki
