what does exit(10); mean in C language program?

[bthakurwar]

#include<stdio.h>
int main()
{
 int j=printf("Hello.");
 return 0;
 exit(10);
}

Here in the above C program, what does exit(10) mean?

[Banfa]

it means exit the program and return a value of 10 to the operating system as the programs result.

What 10 might mean is operating system dependant the only number with a defined meaning is 0 which must be interpreted as success. Normally any non-zero number is interpreted as fail in some manner.

[soli]

I think "exit(10);" here is meaningless and unreachable, case the program return 0 before.

[Banfa]

Sorry you're right I answered the question in your title not the question in your post.

In the posted code the exit(10); is unreachable and will never be executed because the return 0; will happen first.

[Icyhot]

Check this out for more details about the exit method.

[xrajaghosh]

i think its meaningless it's same as exit(0),exit(1) ..if i m wrong then pls let me knw

[sonu53]

at starting of prog. there is int j = (print"hello");
here is i is of integer type and hello is of char type then how can it possible....??
pls explain mi in detail this program from top to bottom.

[Rabbit]

@sonu, printf accepts a char* and returns an int. It's not returning the char* being passed to printf.

[Shubhangi24]

When return 0 will be encountered function returns to O.S. with value as 0. So the exit(10) will never be executed.

[Shubhangi24]

exit(10) i.e. any non zero value to exit() is considered as abnormal program termination.

[donbock]

The exit value can be tested by the entity (batch script, perl script, make, etc) that invoked the program. The meaning of any particular exit value depends on the program that returns it; but the implication of the exit value depends on how the invoking entity reacts to it.

FYI, the default behavior for make is to abort the build if any program returns with a nonzero exit value.

If you write a program that supports nonzero exit values then it is may be useful to print an explanatory error message to stderr before exiting. Printing the error message may be unconditional or you might choose to print it only if a command-line argument requests verbose output. Refer to the perror function for a means to print errors reported by Standard Library functions.

[sgayathri2412]

Is the code correct?