CPS 196 Lab 13 Fall 2007
I. Create a new program, snowman.c, in your labs project. Enter the following program by cutting
and pasting either from here or from the lecture page.
/*snowman.c*/
#include<stdio.h>
/* function prototype */
void drawcircle(void);
int main(void)
{
drawcircle(); /*function call*/
drawcircle();
drawcircle();
return(0);
}
/*function definition */
/* Draw a circle, no parameters. */
void drawcircle(void)
{
/*declarations - local variables*/
char s;
/*executable statements*/
s='*';
printf("%8c%c%c%c\n",s,s,s,s);
printf("%6c%c%5c%c\n",s,s,s,s);
printf("%5c%9c\n",s,s);
printf("%4c%11c\n",s,s);
printf("%4c%11c\n",s,s);
printf("%5c%9c\n",s,s);
printf("%6c%c%5c%c\n",s,s,s,s);
printf("%8c%c%c%c\n",s,s,s,s);
}
a) Resize your Visual Studio window, if necessary, so that you can see this window and the console
window (the black background window) at the same time.
First debug as normal: Step Into (F11) the program and then repeatedly Step Over (F10), observing
what happens in the console window until the program is done. Do Stop Debugging to complete
the program.
b) Now use debug to observe the function executions as well: Step into (F11) the program. Do Step
Over (F10)
EXCEPT for each line which is a function call (such as drawcircle();), choose Step Into (F11).
Observe the order of execution of the program.
