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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...

 int main(){
   ... 


»  while (1) {
»    double x;

»    printf("Please enter a positive number, or negative to quit\n");
»    scanf("%lg", &x);
»    if (x<0) 
      break;

»    printf("The square root of %g is %g\n", x, sqrt(x));
  }

»  return 0;

}

Data

x (double)
128
3
x (double)
128
4
x (double)
128
4.93501523e-270
x (double)
128
2

Memory

: :while {...}

128
129
130
131
132
133
134
135
x = 3

: :while {...}

128
129
130
131
132
133
134
135
x = 4

main(): :while {...}

128
129
130
131
132
133
134
135
x = 4.93501523e-270

: :while {...}

128
129
130
131
132
133
134
135
x = 2

NB: the actual memory address of each variable is the
address shown plus 4290377184 (0xFFB9F5E0).

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.

Input was:

3 4 2 -1

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 a positive number, or negative to quit
The square root of 3 is 1.73205
Please enter a positive number, or negative to quit
The square root of 4 is 2
Please enter a positive number, or negative to quit
The square root of 2 is 1.41421
Please enter a positive number, or negative to quit
                                                                                                                                                                                                                                                                       
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