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#include <stdio.h>
float calculateArea(float width, float height) {  // 'calculateArea' is a function identifier
    return width * height;                        // 'width' and 'height' are variable identifiers
}

int main() {
    float width = 7.5;    // 'width' is an identifier for the rectangle's width
    float height = 4.0;   // 'height' is an identifier for the rectangle's height

    float area = calculateArea(width, height);  // 'area' is an identifier for storing the result

    printf("Area of the rectangle: %.2f\n", area);

    return 0;
}