In this C++ tutorial, you shall learn how to write a program to find the largest number in the given array.
C++ Find Largest Number in Integer Array
To find the largest of elements in an integer array,
- Initialize
largest
with first element of array. - For each element in the array:
- Compare
largest
with this element. - If
largest
is less than this element, then updatelargest
with the element.
- Compare
largest
contains the largest number in given integer array.
We will use C++ Less than Operator for comparison.
Examples
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1. Find the largest number in the array {2, 4, 6, 8, 0, 1}
In the following example, we take an integer array initialized with some elements, and find the largest number of the elements of this array.
main.cpp
#include <iostream> using namespace std; int main() { int x[] = {2, 4, 6, 8, 0, 1}; //integer array int len = sizeof(x) / sizeof(x[0]); //get array length // find largest only if there is atleast one element in array if ( len > 0 ) { int largest = x[0]; //assume that first element is largest for ( int i = 1; i < len; i++ ) { if ( largest < x[i] ) { largest = x[i]; //update largest } } cout << "Largest : " << largest << endl; } else { cout << "No elements in the array." << endl; } }
Output
Largest : 8 Program ended with exit code: 0
Conclusion
In this C++ Tutorial, we learned how to find the largest of elements of an integer array, with the help of example C++ programs.