Hi,
Why same_name in the following code is permitted ?
same_name is name of a function and it's variable.Code:#include <stdio.h> #include <stdlib.h> unsigned same_name(void) { unsigned same_name=0; return same_name; } int main(void) { same_name(); return EXIT_SUCCESS; }
Hello,
The compiler is clever enougth to work out which is a function and which is a variable.
It is permitted but considered bad practice, it can lead to confusion when the code gets more complex.
Regards
To be more precise, in C scope matters. In cases where you have multiple names in different scopes, the inner-most scope takes precedence. For example, this shouldn't work because the function and the variable are both being declared inside the same exact scope:
yet this one works just fine:Code:#include <stdio.h> int main(void) { void name(void); int name = 123; printf("%d\n", name); name(); return 0; } void name(void) { printf("321\n"); }
Code:#include <stdio.h> int main(void) { void name(void); { int name = 123; printf("%d\n", name); } name(); return 0; } void name(void) { printf("321\n"); }
Devoted my life to programming...
To be even more precise, mad-hatter's answer is wrong. It has nothing to do with which is a "variable".
Explode the sunlight here, gentlemen, and you explode the entire universe. - Plan 9 from Outer Space
