From Terry Harvey's 105 class 

  void p(int a, int b){
        int i,j;
        for(i=0; i<a; i++){
           for(j=0; j<b; j++)
              printf("o");
           printf("\n");
        }
   }

What does this print for the call p(4,5)?


   void p(int a, int b){
        int i,j;
        for(i=a; i>=; i--){
           for(j=0; j<b; j++)
              printf("o");
           printf("\n");
        }
   }

What does this print for the call p(4,3)?


   void p(int a, int b){
        int i,j;
        for(i=0; i<a; i+=2){
           for(j=0; j<b; j++)
              printf("hey");
           printf("\n");
        }
   }

What does this print for the call p(2,0)?


1) For each statement, show the effect by writing what is printed,
drawing the effect in memory, or writing "error".

int X = 7, Y; 
int *Ptr1, *Ptr2;

Ptr1 = &X;
Ptr2 = Ptr1;


printf("%p",Ptr1);

printf("%d\n", *Ptr1);

printf("%p\n" Ptr2,);

printf("%d\n", *X);

printf("%d\n", *&X);


2. For the following declarations, draw a picture as we do in class so
   you can answer the questions. Make up numbers for addresses, then
   use them consistently.

   int X = 5;
   int *Ptr = &X;

What are the values of the following expressions?

     a. Ptr

     b. *Ptr

     d. Ptr == &X

     e. &Ptr

     f. *X


Write a function that takes 4 parameters: an array, the size of an
array, min, and max. It finds the min and max of the array and
communicates both values to main. Hint: it cannot return more than
one value.

Given some prototypes of functions you wrote in lab, assemble them in
a main to accomplish some specified task.

Write a prototype only for a function that takes one parameter, and
can modify the parameter in the calling function.

 Write a prototype only for a function that takes one parameter, an
     array of doubles. You do not know the size of the array.

 Declare an array of five integers, and do NOT initialize it.

 Declare an array of five hundred doubles, all initialized to zero.

Show the output and the return value for the following functions
definitions and calls:

************************************************************
Write a function named fact that takes a single integer n
    and returns n!. Example: 5! = 1 * 2 * 3 * 4 * 5
  
Write a function that fills an array of 500 integers
    with the factorial series. Assume 0! is 1. So your array should
    start: 1, 1, 2, 6, 24, ... NOTE: do NOT use your function
    from the previous problem; use the index of the array to solve the
    problem.
  
 Briefly explain why it would be a bad idea to use the
    factorial function you wrote to fill an array with
    factorials. Assume your factorial function works correctly. Hint:
    think about how much work is being done.
************************************************************

Write a statement that prints:
the size of an integer variable on a computer
a random number
the address of an array
the address of a variable
the value located at an address
the value located at a certain index in an array
the value located at a certain pair of indices in a 2-d array
all the values in an integer array
a string
a character array
a null-terminated character array

///////////////////
SCOPE
Show what is printed by the following program.
#include <stdio.h>
int a(int n);
int b(int height, int weight);
int f(int k);
int c;

int main(int x){

  int i = 1;
  c = 5;
  printf("%d\n", a(i));
  printf("%d\n", f(i));
  printf("%d\n", b(i, c));
  printf("%d\n", f(i));
  c = 6;
  printf("%d\n", a(i));
  printf("%d\n", b(i, 2));
  printf("%d\n", f(i));
  return 0;
}

int a(int i){
  int c = 3;
  i += c;
  return i;
}

int b(int j, int c){
  return j + c;
}

int f(int k){
  return 5 + c;
}

///////////////////

Above all, practice writing programs and program segments on
paper. Your book has lots of sample questions that are good
practice. Labs, homeworks, and your lecture notes are excellent
sources of test questions.

Make graphics with either single or nested loops, like
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rand()