C-Programming Tutorials

C Program to Find the Greatest Among Ten Numbers

This C Program is used to find the greatest among ten numbers.


#include <stdio.h>

  int main() {

    int a[10];

    int i;

    int greatest;

    printf("Enter ten values:");

    //Store 10 numbers in an array

    for (i = 0; i < 10; i++) {

    scanf("%d", &a[i]);


    //Assume that a[0] is greatest

    greatest = a[0];

    for (i = 0; i < 10; i++) {

if (a[i] > greatest) {

greatest = a[i];




    Greatest of ten numbers is %d", greatest);

    return 0;


Program Output:

Enter ten values: 2 53 65 3 88 8 14 5 77 64 Greatest of ten numbers is 88


Entered values are 2, 53, 65, 3, 88, 8, 14, 5, 77, 64
They are stored in an array of size 10. let a[] be an array holding these values.
/* how the greatest among ten numbers is found */
Let us consider a variable 'greatest'. At the beginning of the loop, variable 'greatest' is assigned with the value of the first element in the array greatest=a[0]. Here variable 'greatest' is assigned 2 as a[0]=2.

Below loop is executed until the end of the array 'a[]';.
for(i=0; i<10; i++){
greatest= a[i];
For each value of 'i', value of a[i] is compared with value of variable 'greatest'. If any value greater than the value of 'greatest' is encountered, it would be replaced by a[i]. After completion of 'for' loop, the value of variable 'greatest' holds the greatest number in the array. In this case, 88 is the greatest of all the numbers.


C Program to Check whether the Given Number is a Prime or Not (Prev Lesson)
(Next Lesson) C Program to Find the Greatest Number of Three Numbers
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