Question

Fix this C++ code so that the function prototypes come before main. Main needs to be declared first. Then call to the functions from inside of main.

#include<cstdlib>
using namespace std;

//prompt user for input
void getGrades(int gradeArray[],int size)
{
for(int i=0; i<size; i++)
{
cout<<"Enter the grade "<<i+1<<": ";
cin>>gradeArray[i];
}
}

// finding average of all numbers in array
float computeAverage(int numbers[],int size)
{
float sum=0;
for(int i=0; i<size; i++)
{
sum = sum + numbers[i]; //compute sum of all numbers in array
}
return(sum/size); // average is sum divided by numbers of elements
}

//print the array
void printInts(int intArray[],int size)
{
for(int i=0; i<size; i++)
{
cout<<intArray[i]<<" ";
}
}

//generate random numbers within given range
int getRandom(int begin,int end)
{
int randomNumber= begin + ( rand() % ( end - begin + 1 ) ); //using rand function for getting random number
return(randomNumber);
}
int main()
{
int grades[10];
getGrades(grades,10); //get input
cout<<"\nAverage of grades: "<<computeAverage(grades,10); //calculate average

int randomArray[20];
for(int i=0; i<20; i++)
{
randomArray[i]=getRandom(1,50); //fill randomArray
}
cout<<"\n\nContent of random array : ";
printInts(randomArray,20); //print randomArray
cout<<"\nAverage of random array: "<<computeAverage(randomArray,20);

return(0);
}

Answer 1

#include <iostream>
#include <string>
#include <ctime>
#include <stdio.h>      
#include <stdlib.h> 

using namespace std;

//prompt user for input
void getGrades(int gradeArray[],int size);

// finding average of all numbers in array
float computeAverage(int numbers[],int size);

//print the array
void printInts(int intArray[],int size);

//generate random numbers within given range
int getRandom(int begin,int end);

int main()
{
int grades[10];
getGrades(grades,10); //get input
cout<<"\nAverage of grades: "<<computeAverage(grades,10); //calculate average

int randomArray[20];
for(int i=0; i<20; i++)
{
randomArray[i]=getRandom(1,50); //fill randomArray
}
cout<<"\n\nContent of random array : ";
printInts(randomArray,20); //print randomArray
cout<<"\nAverage of random array: "<<computeAverage(randomArray,20);

return(0);
}

void getGrades(int gradeArray[],int size)
{
for(int i=0; i<size; i++)
{
cout<<"Enter the grade "<<i+1<<": ";
cin>>gradeArray[i];
}
}

// finding average of all numbers in array
float computeAverage(int numbers[],int size)
{
float sum=0;
for(int i=0; i<size; i++)
{
sum = sum + numbers[i]; //compute sum of all numbers in array
}
return(sum/size); // average is sum divided by numbers of elements
}

//print the array
void printInts(int intArray[],int size)
{
for(int i=0; i<size; i++)
{
cout<<intArray[i]<<" ";
}
}

//generate random numbers within given range
int getRandom(int begin,int end)
{
int randomNumber= begin + ( rand() % ( end - begin + 1 ) ); //using rand function for getting random number
return(randomNumber);
}