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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()

Try stepping through the code


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

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Code

 Header...

// Example of using if() with && and ||


 int main(){
   ... 

»  int j=2, k=3;
»  double x=4.1;

  // LHS is true so RHS is NOT evaluated
»  if (j+k>x||x>10) 
    printf("Hello 1\n");

  // LHS is true so RHS IS evaluated (but is false)
»  if (j+k>x&&x>10) 
    printf("Hello 2\n");

  // Combining && and ||
»  if ((j+k<x&&x>10)||j<k) 
    printf("Hello 3\n");

»  return 0;

}

Data

j (int)   k (int)
128   132
2
  
3
x (double)
136
4.1

Memory

main()

128
129
130
131
132
133
134
135
j = 2
k = 3
136
137
138
139
140
141
142
143
x = 4.1

NB: the actual memory address of each variable is the
address shown plus 4290561128 (0xFFBCC468).

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

Output

Hello 1
Hello 3
                                                                                                                                                                                                                                                                       
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