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C++ Programming Code Examples

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C++ built-in function

C++ built-in function

Built-in functions are also known as library functions. We need not to declare and define these functions as they are already written in the C++ libraries such as iostream, cmath etc. We can directly call them when we need.

Here we are using built-in function pow(x,y) which is x to the power y. This function is declared in cmath header file so we have included the file in our program using #include directive.

#include <iostream>
#include <cmath>
using namespace std;
int main(){
    /* Calling the built-in function pow(x, y) which is x to the power y 
         We are directly calling this function     */
    cout<<pow(2,5);
    return 0;
}

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