Examples of C-language labels and goto usage

A tag is usually placed at the end of a function and will be executed. In many cases, the tag is executed in the order from top to bottom.

Goto allowsCodeAutomatically jump to the Code defined by the tag to continue execution.

# Include <stdio. h>

Int main ()
{
Int I, J;
For (I = 0; I <10; I ++)
{
Printf ("outer loop executing. I = % d \ n", I );
For (j = 0; j <3; j ++)
{
Printf ("inner loop executing. j = % d \ n", J );
If (I = 15) // although this condition is not true
Goto stop;
}
}
/* This message does not print :*/
Printf ("loop exited. I = % d \ n", I );

Stop: printf ("jumped to stop. I = % d \ n", I); // stop: it is a tag, whether there is a goto jump here,ProgramSequential execution will execute this sentence. In short, it will be executed unconditionally.
Return 0;
}