Anybody please help me to know about return 0;

Question

I know that return 0; is used to end the main function and to make the function to return a value .but am confused that why it forces to return "0"? but as output we are getting any values not only "0". then why return says to return 0;?

sorry am new in CPP that's why having such doubts please help

Answer 1

return 0 means the states the program is successful
returning any other number (generally 1) doesn't do that

Answer 2

thank you