函数名: longjump

功 能: 执行非局部转移

用 法: void longjump(jmp_buf env, int val);

程序例:

#include

#include

#include

void subroutine(jmp_buf);

int main(void)

{

int value;

jmp_buf jumper;

value = setjmp(jumper);

if (value != 0)

{

printf("Longjmp with value %d\", value);

exit(value);

}

printf("About to call subroutine ... \");

subroutine(jumper);

return 0;

}

void subroutine(jmp_buf jumper)

{

longjmp(jumper,1);

}