function pointers in the C language

function pointers in the C language

Concept of function pointers: a function pointer is a pointer to a function code that is located in a code snippet.

Use of function pointers:

#include <stdio.h>

typedef struct (*fun_t) (int,int);

Fun_t PF;

int add (int a, int b)

{

return a+b;

}

int sub (int a,int b)

{

return a-B;

}

int mul (int a,int b)

{

return a*b;

}

int div (int a,int b)

{

return a/b;

}

int main ()

{

int RESULT1,RESULT2,RESULT3,RESULT4;

PF = add;

RESULT1 = PF (20,4);

printf ("Result1 is%d", result);

PF = Sub;

RESULT2=PF (20,4);

printf ("Result2 is%d", result2);

PF = Mul;

RESULT3 = PF (20,4);

printf ("Result3 is%d", RESULT3);

PF = div;

RESULT4=PF (20,4);

printf ("Result4 is%d", RESULT4);

return 0;

}

function pointers in the C language