C program

EMPS intranet

Note

This example demonstrate the effects of if() statements, by highlighting parts of the code that been executed in bold dark red . Try it and see which parts of the code are executed and which are skipped over.

Hi! Hi! Start main()

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Value and type of last evaluated expression: Address of array element: Address of array elementx: (none)

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Code

 Header...
// Play the Fizz-Buzz game

 int main(){
   ... 

»  int num;

»  printf("Please enter an integer >= 1\n");
»  scanf("%d", &num);

»  if (num<0) {
»    printf("Sorry, %d is not >= 1!\n", num);
»    return 1;
  }
  else if (num%15==0) 
    printf("FizzBuzz!!\n");
  else if (num%3==0) 
    printf("Fizz!\n");
  else if (num%5==0) 
    printf("Buzz!\n");
  else 
    printf("%d\n", num);

»  return 0;
}

Data

num (int)
128
1

Memory

main()
128	129	130	131
num = 1

NB: the actual memory address of each variable is the
address shown plus 4288768744 (0xFFA16AE8).

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Input was:

Show output (Before looking at the output, work out what you think it put should be and see if you are right.)

Output

Please enter an integer >= 1
Fizz!

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