Question

Write a function prototype and a function definition for a function called Numbers that takes three arguments by reference, all of type long, and displays the sum, average, and largest of its three arguments.

Answer 1

Code:

#include <stdio.h>

//the below statement is a function prototype for Numbers

void Numbers(long *a,long *b,long *c);

int main(void) {

//you can call the function after giving the prototype

long int1=92233720368543;

long int2=92233720368542;

long int3=92233720368541;

//calling the function by using reference

Numbers(&int1,&int2,&int3);

return 0;

}

//Here is the function definition

void Numbers(long *a,long *b,long *c){

//calculating sum

long sum=*a+*b+*c;

printf("Sum: %ld\n",sum);

//calculating average and priting

printf("Average: %ld\n",sum/3);

//code to decide the Largest

if(*a>*b && *a>*c){

printf("Largest: %ld\n",*a);

}else if(*b>*a && *b>*c){

printf("Largest: %ld\n",*b);

}else{

printf("Largest: %ld\n",*c);

}

}

output:

Sum: 276701161105626
Average: 92233720368542
Largest: 92233720368543

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