In this C++ tutorial, you will learn how to write a C++ program to find the largest or maximum of given three numbers.

C++ – Find the Maximum of Three Numbers

You can find the maximum of three numbers in C++ in many ways. In this tutorial, we shall go through some of the processes using conditional statements.

1. Find maximum of three numbers using If-Else-If

In this example program, we shall use C++ If Else If statement to find the maximum of three numbers.

C++ Program

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#include <iostream>
using namespace std;

int main() {
   int a = 11;
   int b = 55;
   int c = 23;

   int max;

   if (a>b && a>c) {
      max = a;
   } else if (b>c) {
      max = b;
   } else {
      max = c;
   }
   
   cout << max << endl;
}

Output

55

2. Find maximum of three numbers using Nested If-Else

In this example program, we shall use C++ Nested If Else statement to find the maximum of three numbers.

C++ Program

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#include <iostream>
using namespace std;

int main() {
   int a = 11;
   int b = 5;
   int c = 2;

   int max;

   if (a > b) {
      if (a > c) {
         max = a;
      } else {
         max = c;
      }
   } else {
      if (b > c) {
         max = b;
      } else {
         max = c;
      }
   }
   
   cout << max << endl;
}

Output

11

3. Find maximum of three numbers using simple If statement

In this example program, we shall use simple C++ If statement to find the maximum of three numbers.

C++ Program

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#include <iostream>
using namespace std;

int main() {
   int a = 11;
   int b = 5;
   int c = 32;

   int max;

   if (a > b && a > c) {
      max = a;
   }
   if (b > a && b > c) {
      max = b;
   }
   if (c > a && c > b) {
      max = c;
   }
   
   cout << max << endl;
}

Output

11

4. Find maximum of three numbers using Ternary Operator

In this example program, we shall use C++ Ternary Operator to find the maximum of three numbers.

C++ Program

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#include <iostream>
using namespace std;

int main() {
   int a = 11;
   int b = 5;
   int c = 23;

   int max = (a>b) ? ((a>c) ? a : c) : ((b>c) ? b : c) ;
   
   cout << max << endl;
}

Output

23

Conclusion

In this C++ Tutorial, we learned how to find the maximum number of given three numbers using different conditional statements in C++.