What is the return value of main () in C?
Table of Contents
- 1 What is the return value of main () in C?
- 2 Where does the main function return its value in C language?
- 3 How do you return a value from a function?
- 4 How does a main function in C++ differ from main function in C?
- 5 Where is the return value of a function stored?
- 6 How do you return a value?
- 7 Can the return type of the main function be in it?
What is the return value of main () in C?
zero return value
The return value of main() function shows how the program exited. The normal exit of program is represented by zero return value. If the code has errors, fault etc., it will be terminated by non-zero value.
Where does the main function return its value in C language?
main function returns integer value by default. if zero is returned as exit status to indicate to Operating system that the program worked succesfully without any compile time or run time errors. if a non zero value(1 mostly) is returned to indicate some error happened in program execution.
How do you print the result of a function in C?
In C programming language, printf() function is used to print the (“character, string, float, integer, octal and hexadecimal values”) onto the output screen. We use printf() function with \%d format specifier to display the value of an integer variable.
How do you return a value from a function?
To return a value from a function, you must include a return statement, followed by the value to be returned, before the function’s end statement. If you do not include a return statement or if you do not specify a value after the keyword return, the value returned by the function is unpredictable.
How does a main function in C++ differ from main function in C?
Originally Answered: How does a main function in C++ differ from main in C? Main function in C++ must return an integer while in main function of C return type can be void as well. Though it is recommended to use returntype as int in main function of C as well.
What is return function in C?
A return statement ends the execution of a function, and returns control to the calling function. Execution resumes in the calling function at the point immediately following the call. A return statement can return a value to the calling function.
Where is the return value of a function stored?
Well, it isn’t stored. It actually gets erased from memory. When we call a function, the function executes its code and after the return, that particular function call gets wiped out from working memory ( the browser is in charge of the cleanup task).
How do you return a value?
To return a value using the Return statement
- Put a Return statement at the point where the procedure’s task is completed.
- Follow the Return keyword with an expression that yields the value you want to return to the calling code.
- You can have more than one Return statement in the same procedure.
Can main method return any value?
As main() method doesn’t return anything, its return type is void. As soon as the main() method terminates, the java program terminates too. Hence, it doesn’t make any sense to return from main() method as JVM can’t do anything with the return value of it.
Can the return type of the main function be in it?
You can write the main method in your program with return type other than void, the program gets compiled without compilation errors. But, at the time of execution JVM does not consider this new method (with return type other than void) as the entry point of the program.