Type casting converts a value from one data type to another explicitly. Unlike implicit type conversion, the conversion is requested by the programmer using a cast expression.

This example demonstrates the use of static_cast to convert an integer value to a floating-point value.

Source Code #

#include <iostream>

int main()
{
    int total_marks = 425;

    float average = static_cast<float>(total_marks) / 5;

    std::cout << "Average Marks: " << average << '\n';

    return 0;
}

Output #

Average Marks: 85

Explanation #

• int total_marks = 425; declares an integer variable containing the total marks.
• static_cast<float>(total_marks) explicitly converts the integer value to the float type.
• The conversion is performed before the division operation. As a result, floating-point division is used, producing a floating-point result.
• static_cast is the preferred C++ cast for well-defined conversions between compatible data types because it is explicit and easier to identify than C-style casts.
• Without the cast, the expression total_marks / 5 performs integer division because both operands are integers.
• std::cout << "Average Marks: " << average << '\n'; prints the floating-point result.
• return 0; terminates the program successfully.