那会错吗？如果是这样,为什么呢？输出是2500

以下代码的输出是2500.它包含指针.有人可以给出正确的解释吗？为什么打印为2500？它是通过指针声明还是有另一个原因？

#include 

/* Two functions include and they are operated by main function */

int *f(int x) {
    /* Creates an variable */
    int p;
    p = x;
    return &p;
}

/* Here the initialization of the function g */
int *g(int x) {
    /* Creates an variable */
    int y;
    y = x;
    return &y;
}

/* This creates two pointers called x and y */
int main() {
    int *x, *y;
    /* Here call the functions f and g */
    x = f(100);
    /* Here call the function g */
    y = g(2500);
    /* How does it print 2500? */
    /* print the value of x */
    printf("%d \n", *x);
    return 0;
}