// This program was used to demonstrate how to trace code.

const float PI = 3.1415;
const char BLANK = ' ';

int main () {
    char ch1, ch2;
    float  x,y,z;
            
     x = 2;
     y = 5;
     z = x;
     ch1 = 'a';
     ch2 = BLANK;
     x = PI;

     return(0);
}