C-Function pointers (for odd and even numbers)

1#include <stdio.h>2 3 /*4 Write a function, when the input n is even, call the function to 1/2+1/4+...+1/n, when the input n is odd, call the function 1/1+1/3+...+1/n (using pointer function).5 */6 7 //+...+ + 1/n;8 float9Even (intN) {Ten     floatsum =0; One      for(inti =2; I <=n; i+=2) ASum + = (float)1/i; -     returnsum; - } the  - //1/1 + 1/3 +...+ 1/n; - float -OddintN) { +     floatsum =0; -      for(inti =1; I <= N; i+=2) +Sum + = (float)1/i; A     returnsum; at } -  - //The function pointer is a parameter. - float -Sumfloat(*s) (int),inti) { -     return(*s) (i); in } -   to //Main function Call + intMain () { -     inti; theprintf"Please enter a positive integer:"); *scanf"%d", &i); $     floats;Panax Notoginseng     ifI2==0) -s =sum (even, i); the     Else +s =sum (odd, i); Aprintf"sum=%f", s); the}

Ref:c language function Pointer basics

C-Function pointers (for odd and even numbers)