======C/C++ Programming Knowledge Assessment======

=====0x0=====
For the following values, list the smallest possible C data type it can fit into:

  * 32
  * 562
  * -32769
  * 98435984
  * 3.14
  * -65
  * 31415926535897
  * -24764

=====0x1=====
Analyze the following code, and answer the questions:

<code c 1>
#include <stdio.h>
#define SIZE 31

int main()
{
    char data[SIZE];
    int i;
    
    printf("Enter a string of up to %d letters (upper and lowercase), NO spaces: ", (SIZE-1));
    scanf("%s", data);
    
    for(i = 0; i < SIZE; i++)
    {   
        if (data[i] != 0)
        {
            if ((data[i] == 97) || (data[i] == 101) || (data[i] == 105) || (data[i] == 111) || (data[i] == 117))
            {
                data[i] = data[i] - 32;
            }
        }
        else
        {
            break;
        }
    }
    
    printf("After processing, the string is: %s\n", data);
    
    return(0);
}
</code>

  * What does this program do?
  * What do both the if() statements in the loop do?
  * How does the program travel through the string?
  * How does the program change its data? Why?
  * What condition would cause the **else** to be evaluated?

=====0x2=====
Analyze the following code, and answer the questions:

<code c 1>
#include <stdio.h>
#define SIZE 31

int main()
{
    char data[SIZE];
    int i, j = 0;
    
    printf("Enter a string of up to %d letters (upper and lowercase), NO spaces: ", (SIZE-1));
    scanf("%s", data);
    
    for(i = 0; i < SIZE; i++)
    {
        if (data[i] != 0)
        {
            if ((data[i] == 101) || (data[i] == 69))
            {
                j = j + 1;
            }
        }
        else
        {
            break;
        }
    }
    
    printf("After processing, j is: %d\n", j);
    
    return(0);
}
</code>

  * What does this program do? (What information does it provide?)
  * What is the inner if()-statement looking for?

=====0x3=====
Analyze the following code, and answer the questions:

<code c 1>
#include <stdio.h>
#define SIZE 31

int main()
{
    char data[SIZE];
    int i, j = 0, k = 0;
    
    printf("Enter a string of up to %d letters (upper and lowercase), NO spaces: ", (SIZE-1));
    scanf("%s", data);
    
    for(i = 0; i < SIZE; i++)
    {
        if (data[i] != 0)
        {
            if ((data[i] >= 65) && (data[i] <= 90))
            {
                j = j + data[i];
                k++;
            }
        }
        else
        {
            break;
        }
    }
    
    i = j / k;
    j = i;
    
    printf("After processing, j is: %c\n", j);
    
    return(0);
}
</code>

  * What does this program do? (What information does it provide? However nonsensical.)
  * What is the inner if() statement looking for?
  * In what format is this program displaying j?

=====0x4=====
Analyze the following code, and answer the questions:

<code c 1>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#define SIZE 31

int main()
{
    char data[SIZE];
    int i, j = -1, k = 0;
    
    srand(time(NULL));
    
    for(i = 0; i < SIZE; i++)
    {
        data[i] = rand() % 2599 + 1;
    }
    
    for(i = 0; i < SIZE; i++)
    {
        if (data[i] > j)
            j = data[i];
    }
        
    printf("After processing, j is: %d\n", j);
    
    return(0);
}
</code>

  * What does this program do? (What information does it provide?)
  * What specifically is the first for() loop doing?
  * What is the second for() loop doing?