Tutorial Gateway

  • C
  • C#
  • Python
  • SQL
  • Java
  • JS
  • BI Tools
    • Informatica
    • Talend
    • Tableau
    • Power BI
    • SSIS
    • SSRS
    • SSAS
    • MDX
    • R Tutorial
    • Alteryx
    • QlikView
  • More
    • C Programs
    • C++ Programs
    • Go Programs
    • Python Programs
    • Java Programs
  • MySQL

C Program to Calculate the Sum and Average of n Number

How to write a C Program to calculate the Sum and Average of N number using For Loop, While Loop and Do While Loop.

C Program to find Sum and Average of n Number using For Loop

This C program allows the user to enter the number (n) he wishes to calculate the average and sum. Next, it will ask the user to enter individual items up to a declared number.

Using the For loop in C Programming, this program will calculate the sum, and later this C program will calculate the average.

#include<stdio.h>

void main()
{
  int i,n,Sum=0,numbers;
  float Average;

  printf("\nPlease Enter How many Number you want?\n");
  scanf("%d",&n);

  printf("\nPlease Enter the elements one by one\n");
  for(i=0;i<n;++i)
   {
     scanf("%d",&numbers);
     Sum = Sum +numbers;
   }

  Average = Sum/n;

  printf("\nSum of the %d Numbers = %d",n, Sum);
  printf("\nAverage of the %d Numbers = %.2f",n, Average);

  return 0;
}

OUTPUT:

Average of n Number Output 1

The code analysis behind this C program to find Average of n Number

  • The first printf statement will ask the user to enter n value. For example, if the user enters 2, then the second printf statement will ask the user to enter those two values, one after the other.
  • For loop will resist the user, not to enter more than two values by using the condition i<n.
  • In the next line, we added the entered value to sum.
  • After completing this, it will start the second iteration. For the 3rd iteration, the condition (i<n) will fail so, it will exit from the For loop.
  • Outside the loop, we calculated the average using the formula sum/n. In our C Programming example, it is 30/2 = 15

C Program to find Sum and Average of n Number using While Loop

This program allows the user to enter the number (n) he wishes to calculate the average and sum. Next, it will ask the user to enter individual items up to a declared number. Using the While Loop, it will calculate the sum, and later it will calculate the average.

#include<stdio.h>

void main()
{
  int n, numbers, i=0,Sum=0;
  float Average;

  printf("\nPlease Enter How many Number you want?\n");
  scanf("%d",&n);

  printf("\nPlease Enter the elements one by one\n");
  while(i<n)
   {
     scanf("%d",&numbers);
     Sum = Sum +numbers;
     i++;
   }

  Average = Sum/n;

  printf("\nSum of the %d Numbers = %d",n, Sum);
  printf("\nAverage of the %d Numbers = %.2f",n, Average);

  return 0;
}

Average of n Number Output 2

Within this C Program to Calculate the Sum and Average of n Number, the first printf statement will ask the user to enter n value. For example, If the user enters 5, then the second printf statement will ask the user to enter those 5 values one after the other.

The while loop will resist the user, not to enter more than 2 values by using the condition i<n.

In the next line, we added the entered value to the sum.

After completing this, the value of i incremented by the Increment operator.

Now it will start the second iteration. For the 3rd iteration the condition (i<n) will fail. So, it will exit from the loop.

C Program to find Sum and Average of n Number using Do While Loop

This program allows the user to enter the number (n) he wishes to calculate the average and sum. Next, it will ask the user to enter individual items up to a declared number. Using the Do While Loop, it will calculate the sum and later calculates the average.

#include<stdio.h>

void main()
{
  int n, numbers, i=0,Sum=0;
  float Average;

  printf("\nPlease Enter How many Number you want?\n");
  scanf("%d",&n);

  printf("\nPlease Enter the elements one by one\n");
  do
   {
     scanf("%d",&numbers);
     Sum = Sum +numbers;
     i++;
   }while(i<n);

  Average = Sum/n;

  printf("\nSum of the %d Numbers = %d",n, Sum);
  printf("\nAverage of the %d Numbers = %.2f",n, Average);

  return 0;
}

Average of n numbers Output 3

We just replaced the While loop with the Do While loop. Please don’t forget to miss the semi-colon after the while condition.

Filed Under: C Programs

  • C Hello World
  • C Add Two numbers
  • C Armstrong Number Program
  • C Convert Celsius to Fahrenheit
  • C Convert Decimal to Binary
  • C Convert Decimal to Octal
  • C Convert CM to Meter and KM
  • C Convert KM to M, CM & MM
  • C Convert Fahrenheit to Celsius
  • C Compound Interest Program
  • C Count Digits in a Number
  • C Count Notes in an Amount
  • C Cube of a Number
  • C Electricity Bill Program
  • C Factors of a Number Program
  • C Factorial of a Number Program
  • C GCD of Two Numbers
  • C Generic Root of a Number
  • C Gross Salary of an Employee
  • C Largest of Two Numbers
  • C Largest of Three numbers
  • C Last Digit Of a Number
  • C LCM of Two Numbers
  • C Leap Year program
  • C Multiplication Table program
  • C Natural Numbers from 1 to N
  • C Natural Numbers in reverse
  • C NCR Factorial of a Number
  • C Number is Divisible by 5 and 11
  • C Palindrome Program
  • C Palindrome String program
  • C Perfect Number Program
  • C Profit or Loss Program
  • C Print 1 to 100
  • C Print Prime Numbers 1 to 100
  • C Prime Number program
  • C Prime Factors of a Number
  • C Prime, Armstrong or Perfect
  • C Positive or Negative program
  • C Print Odd Numbers 1 to N
  • C Print Even Numbers 1 to N
  • C Print Integer, Char & Float
  • C Power of a Number program
  • C Product of Digits in a Number
  • C Roots of a Quadratic Equation
  • C Reverse a Number
  • C Simple Calculator Program
  • C Simple Interest
  • C Square of a Number
  • C Square Root of a Number
  • C Standard Deviation program
  • C Strong Number Program
  • C Student Grade program
  • C Sum of Odd Numbers program
  • C Sum of Even Nums program
  • C Sum of Even and Odd Nums
  • C Swap First & Last digit of Num
  • C Sum of First & Last digit Num
  • C Sum of Digits of a Number
  • C Sum of N Numbers Program
  • C Sum and Average of n Number
  • C Swap 2 Numbers
  • C Total, Avg & % of Five Subjects
  • C Quick Sort
  • C Selection Sort
  • C Insertion Sort
  • C Bubble Sort
  • C Fibonacci Series Program
  • C Nth Fibonacci number
  • C Sum of AP Series
  • C Sum of GP Series
  • C Sum of series 1³+2³+3³+….+n³
  • C Sum of series 1²+2²+3²+….+n²
  • C ASCII value of String chars
  • C Print Characters in a String
  • C Compare Two Strings
  • C Concatenate Two Strings
  • C Copy String
  • C String length program
  • C Convert String to Lowercase
  • C First Occurrence of string char
  • C First Occur of String Word
  • C Count Occur of string Char
  • C Count Alphabets, Digits & Special Chars
  • C Count Vowels & Consonants
  • C string remove all Occ of char
  • C remove 1st Occ of char in string
  • C remove last Occ char in string
  • C replace All Occ of char in string
  • C Replace last Occ of String Char
  • C Replace 1st occ char in string
  • C Reverse words Order in string
  • C Reverse a String
  • C Toggle Case of all char in string
  • C Array Arithmetic Operations
  • C Matrix Arithmetic Operations
  • C Count Frequency of array item
  • C Count Duplicate Array items
  • C Count +ve & -Ve Array items
  • C Count Even & Odd Array items
  • C Copy an Array to another
  • C Delete Duplicate Array items
  • C Delete an Element in an Array
  • C insert an Element in an Array
  • C 2nd largest Number in an Array
  • C Find Largest Array Number
  • C Find Smallest Array Number
  • C Largest & Smallest Array item
  • C Merge Two Arrays
  • C Print Unique Array Elements
  • C Print Arrayy Elements
  • C Print Negative Array Numbers
  • C Print Positive Array Numbers
  • C Put +ve & -Ve in 2 Arrays
  • C Put Even & Odd in 2 Arrays
  • C Program to Reverse an Array
  • C Search an Element in an Array
  • C Sum of array even, odd nums
  • C Sort Array in Ascending Order
  • C Sort Array in Descending
  • C Swap 2 Arrays without Temp
  • C Sum of all Array Elements
  • C Sum of each Matrix column
  • C sum of each row in a Matrix
  • C Sum of Matrix row & column
  • C Add Two Matrices
  • C Sparse Matrix
  • C Symmetric Matrix
  • C Identity Matrix
  • C Interchange Matrix Diagonals
  • C Check two Matrices Equal
  • C Lower Triangle of a Matrix
  • C Upper Triangle of a Matrix
  • C Sum of Lower Triangle Matrix
  • C Sum of Upper Triangle Matrix
  • C Subtract Two Matrices
  • C Transpose of a Matrix program

Copyright © 2021· All Rights Reserved by Suresh.
About | Contact | Privacy Policy