True, we can't define a function within another function in standard C. gcc 
has an extension that allows nested functions - 
http://gcc.gnu.org/onlinedocs/gcc/Nested-Functions.html

On Tuesday, October 2, 2012 3:37:04 PM UTC-4, rahul sharma wrote:
>
> Guys i have read that we cant define function in another function in c
> Then why this followung program running fine on gcc
>
> #include<stdio.h>
>     void abc()
>     {
>          printf("bac");
>          void abf()
>          {
>          printf("bas");
>          getchar();
>          }
> }
> int main()
> {
>     abc();
>     getchar();
> }
>
>

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