How can I make the program returns to menu after finishing calculating. ((Im using codeblocks on Windows.))

Question

https://code.sololearn.com/ccSWGcQIe8ic/?ref=app

Answer 1

char menu = '0';

'0' is not int in your scanf(" %c", &menu);

put the calculator in a while loop to repeatedly ask for inputs

https://code.sololearn.com/c1aiV1GkD1kk/?ref=app