How to call a function to output int function return value in c++

To call a function in C and output its int return value: Declare and define a function that returns an int value. Call the function in the main function and store the return value in a variable, then print the value of the variable using the std::cout stream outputter.

How to call a function in C to output int function return value

In C, call a function and output it The process of returning an int value is very simple.

Step 1: Declare and define a function that returns an int value

<code class="cpp">int myFunction() {
  // 函数主体
  return value;
}</code>

Step 2: Call the function in the main function

<code class="cpp">int main() {
  int result = myFunction();
  std::cout << result << std::endl;
  return 0;
}</code>

Through the above steps, you can call the function in C and output its int return value.

Detailed explanation:

• int myFunction(): This is a function declaration that returns an int type value.
• return value: The function returns an int value through the return statement.
• int result = myFunction(): Call the function in the main function and store the return value in the result variable.
• std::cout << result << std::endl: Use the std::cout stream outputter to print the value of the result variable.

Sample code:

<code class="cpp">#include <iostream>

int myFunction() {
  return 10;
}

int main() {
  int result = myFunction();
  std::cout << result << std::endl;  // 输出 10
  return 0;
}</code>

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