C program to calculate average using while loop?

Answer 1

//to calculate using while

#include<stdio.h>

#include<conio.h>

void main()

{ int count

float average,sum;

sum=0;

count=0;

while(count<N)

scanf("%f",n)

sum=sum+count

count=count+1

}

average=sum/n

Answer 2

#include<iostream>

#include<sstream>

#include<vector>

#include<numeric> // for std::accumulate()

// If the given string represents a natural number then return its value.

// Otherwise return 0 to indicate error (note: 0 is not a natural number).

unsigned string_to_natural (const std::string& str) {

if (str.empty() str.find_first_not_of("0123456789")!=str.npos) return 0;

std::stringstream ss;

ss<<str;

unsigned u;

if (ss>>u)

return u;

return 0;

}

int main (void) {

std::vector<unsigned> ages;

while (true) {

std::cout<<"Input age (100 to end): ";

std::string input;

std::cin.clear();

std::cin>>input;

unsigned age {string_to_natural (input)};

if (age==100) break;

if (age==0) {

std::cerr<<"Invalid input.\n";

continue;

}

ages.push_back (age);

}

std::cout<<"Average age: "<<std::accumulate (ages.begin(), ages.end(), 0)/ages.size()<<std::endl;

}

Answer 3

#include

#include

void main()

{

int a,b,c,d,e,total,name,rollno,i;

float avg;

clrscr();

i=1;

while(i