setjmp function sets a point for longjmp()

Syntax

C setjmp function has the following syntax.

Header

C setjmp function is from header file setjmp.h.

Description

C setjmp function saves the contents of the system stack in the buffer envbuf for later use by longjmp().

It returns returns zero upon invocation.

Example

Set a point for longjmp() by using C setjmp function.

#include <setjmp.h>
#include <stdio.h>
//from  www.  j ava2 s  .  c om
jmp_buf ebuf;
void f2(void);

int main(void)
{
  int i;

  printf("1 ");
  i = setjmp(ebuf);
  if(i == 0) {
    f2();
    printf("This will not be printed.");
  }
  printf("%d", i);

  return 0;
}

void f2(void)
{
  printf("2 ");
  longjmp(ebuf, 3);
}