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int *(*p[10])(char *, char *); It is an array of function pointers that returns an integer pointer. Each function has two arguments which in turn are pointers to character type variable. p[0], p[1],....., p[9] are function pointers.return type : integer pointer.p[10] : array of function pointerschar * : arguments passed to the function Program: Example program to explain function pointers.#include<stdio.h>#include<stdlib.h>int *(*p[10])(char *, char *); //average function which returns pointer to integer whose value is average of ascii value of characters passed by pointersint *average(char *, char *); //function which returns pointer to integer whose value is sum of ascii value of characters passed by pointersint *sum(char *, char *);int retrn;int main(void) {int i;for (i = 0; i < 5; i++) {//p[0] to p[4] are pointers to average function. p[i] = &(average);}for (i = 5; i < 10; i++) {//p[5] to p[9] are pointers to sum functionp[i] = &(sum);}char str[10] = "vediklabs.in";int *intstr[10];for (i = 0; i < 9; i++) {//upto p[4] average function is called, from p[5] sum is called. intstr[i] = p[i](&str[i], &str[i + 1]);if (i < 5) {//prints the average of ascii of both charactersprintf(" \n average of %c and %c is %d",str[i], str[i + 1],*intstr[i]);}else {//prints the sum of ascii of both characters.printf(" \n sum of %c and %c is %d",str[i], str[i + 1], *intstr[i]);}}return 0;}//function average is defined hereint *average(char *arg1, char *arg2) {retrn = (*arg1 + *arg2) / 2;return (&retrn);}                                                     //function sum is defined hereint *sum(char *arg1, char *arg2) {retrn = (*arg1 + *arg2);return (&retrn);}Output:average of n and o is 110average of o and d is 105average of d and a is 98 average of d and a is 98average of a and l is 102average of l and o is 109sum of o and . is 157sum of . and c is 145sum of c and o is 210sum of o and m is 220Explanation:In this program p[10] is an array of function pointers. First five elements of p[10] point to the function: int *average(char *arg1,char *arg2). Next five elements point to the function int *sum(char *arg1,char *arg2). They return pointer to an integer and accept pointer to char as arguments. Function average:int *average(char *arg1,char *arg2) This function finds the average of the two values of the addresses passed to it as arguments and returns address of the average value as an integer pointer. Function sum:int *sum(char *arg1,char *arg2) This function finds the sum of the two values of the addresses passed to it as arguments and returns address of the sum value as an integer pointer.
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C

Topic: Variables

Explain the variable assignment in the declaration

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C

Topic: Variables

Explain the variable assignment in the declaration

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