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What is the difference between goto and longjmp() and setjmp()?

A goto statement implements a local jump of program execution, and
 the longjmp() and setjmp() functions implement a nonlocal, or far,

jump of program execution.
 Generally, a jump in execution of any kind should be avoided because
 it is not considered good programming practice to use such statements
 as goto and longjmp in your program.
 A goto statement simply bypasses code in your program and jumps to
 a predefined position. To use the goto statement, you give it a labeled
 position to jump to. This predefined position must be within the same
 function. You cannot implement gotos between functions.
 When your program calls setjmp(), the current state of your program is
 saved in a structure of type jmp_buf. Later, your program can call the
 longjmp() function to restore the program’s state as it was when you
 called setjmp().Unlike the goto statement, the longjmp() and setjmp()
 functions do not need to be implemented in the same function.
 However, there is a major drawback to using these functions: your
 program, when restored to its previously saved state, will lose its
 references to any dynamically allocated memory between the
 longjmp() and the setjmp(). This means you will waste memory for
 every malloc() or calloc() you have implemented between your
 longjmp() and setjmp(), and your program will be horribly inefficient.
 It is highly recommended that you avoid using functions such as
 longjmp() and setjmp() because they, like the goto statement, are
 quite often an indication of poor programming practice.

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