fork download

#include <stdio.h>
 
/* Array of function pointers (different return types and parameters) */
 
void sayHello()
{
    printf("Hello World\n");
}
 
int add(int a, int b)
{
    return a+b;
}
 
int twice(int a)
{
    return 2*a;
}
 
int main()
{
    int choice;
    typedef int(*add_ptr)(int,int);
    typedef void(*hello_ptr)(void);
    typedef int(*twice_ptr)(int);
 
    void * func_table[] = {(void *)sayHello, (void *)add, (void *)twice};
 
 
    printf("Add : %d\n", ((add_ptr)func_table[1])(10,5));
    ((hello_ptr)func_table[0])();
    printf("Twice : %d\n",((twice_ptr)func_table[2])(10));
    return 0;
}

prog.c: In function 'main':
prog.c:27:28: error: ISO C forbids conversion of function pointer to object pointer type [-Werror=pedantic]
     void * func_table[] = {(void *)sayHello, (void *)add, (void *)twice};
                            ^
prog.c:27:46: error: ISO C forbids conversion of function pointer to object pointer type [-Werror=pedantic]
     void * func_table[] = {(void *)sayHello, (void *)add, (void *)twice};
                                              ^
prog.c:27:59: error: ISO C forbids conversion of function pointer to object pointer type [-Werror=pedantic]
     void * func_table[] = {(void *)sayHello, (void *)add, (void *)twice};
                                                           ^
prog.c:30:27: error: ISO C forbids conversion of object pointer to function pointer type [-Werror=pedantic]
     printf("Add : %d\n", ((add_ptr)func_table[1])(10,5));
                           ^
prog.c:31:6: error: ISO C forbids conversion of object pointer to function pointer type [-Werror=pedantic]
     ((hello_ptr)func_table[0])();
      ^
prog.c:32:28: error: ISO C forbids conversion of object pointer to function pointer type [-Werror=pedantic]
     printf("Twice : %d\n",((twice_ptr)func_table[2])(10));
                            ^
prog.c:22:9: error: unused variable 'choice' [-Werror=unused-variable]
     int choice;
         ^
cc1: all warnings being treated as errors

Standard output is empty