Theory - Learning C Programming ||Some Imp Points About Functions In C. || For Beginners || #C175
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Important Point’s about Functions in C Language
1) Every C program has a function called main () that is called by operating system when a user runs the program.
2) Every function has a return type. If a function doesn’t return any value, then void is used as return type. Moreover if the return type of the function is void ,we still can use return statement in the body of function definition by not specifying any constant,variable,etc. with it ,by only mentioning the ‘return;’ statement which would symbolize the termination of the function as shown below:
void function name(int a)
{
....... //Function Body
return; //Function execution would get terminated
}
3) In C, functions can return any type except arrays and functions. We can get around this limitation by returning pointer to array or pointer to function.
4) Empty parameter list in C mean that the parameter list is not specified and function can be called with any parameters. In C, it is not a good idea to declare a function like fun(). To declare a function that can only be called without any parameter, we should use “void fun(void)”.
5)If in a C program, a function is called before its declaration then the C compiler automatically assumes the declaration of that function in the following way:
int function name();
And in that case if the return type of that function is different than INT ,compiler would show an error.
To Install Turbo C++ 4.5 Click on Below Link and Download rar file and extract and then install..
https://app.box.com/s/soz2137zo0rv0sb...
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