Question

C programming

Write a function that accepts an array of integers as an input, and output the sum of all values and the multiplication of all values. e.g. Suppose that the array contained the following values: 1 2 3 -4 5. The function should calculate and output the sum of values (i.e. 1+2+3+(-4)+5=7) and the multiplication of all values (i.e. 1*2*3*-4*5=-120).

Start by carefully writing the function prototype - put some thought into this. Think about the good programming habits, and keep in mind that a function can return only one value in C. After writing the prototype, complete the function definition and test it.

NOTE: Functions can output only one value from a function using the return keyword. In this task, your function is expected to output 2 values.

Answer 1

#include <stdio.h>
//declare a structure to return different multiple values
struct sumprod{
int sum;
int prod;
};
struct sumprod calc(int n)//return type is struct
{
struct sumprod s;
s.sum=0;
s.prod=1;
int a[n];
for(int i=0;i<n;i++)
{
scanf("%d",&a[i]);//read values and calculate
s.sum+=a[i];//sum an Product
s.prod*=a[i];
}
return s;//return structure variable
  
}
int main()
{
  
struct sumprod result;
int n;
printf("enter no.of elements:");
scanf("%d",&n);
result=calc(n);
printf("Sum is %d\nProduct is %d",result.sum,result.prod);
return 0;
}