1 #include <stdio.h> 2  3 int square137(int n); 4  5 void p137() { 6     double x = 3.0; 7     int y = (int)x; 8     printf("Square of %f is %d\n", x, square137(y)); 9 }10 11 int square137(int n) {12     return n * n;13 }