block.cpp

visual c++源码一定对你有一定的帮助

#include    <stdio.h>

int main ()
{
int x;
    x = 2;
    printf ("x prior to the block is %d\n", x);
    {
    int x;
        x = 3;
        printf ("x inside the block is %d\n", x);
    }
    printf ("x after the block is %d\n", x);
    return (0);
}