c-resources/CPlusPlus20ForProgrammers-m.../examples/ch07/fig07_02.cpp

37 lines
1.6 KiB
C++

// fig07_02.cpp
// Pass-by-value used to cube a variable's value.
#include <fmt/format.h>
#include <iostream>
int cubeByValue(int n); // prototype
int main() {
int number{5};
std::cout << fmt::format("Original value of number is {}\n", number);
number = cubeByValue(number); // pass number by value to cubeByValue
std::cout << fmt::format("New value of number is {}\n", number);
}
// calculate and return cube of integer argument
int cubeByValue(int n) {
return n * n * n; // cube local variable n and return result
}
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