warning: return type of �main� is not �int�

When we will compile a c program we may get following error message:



warning: return type of �main� is not �int�



Solution:



Cause of this warning message is return type of main function is not int. It is necessary to return an int value by main function. If main function returns 0 then operating system treat it as success.



For example:



int main(){

//Write your c code.

}