Skip to content
EMPS intranet

Back to top
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)

Your browser does not support the canvas element which will make some the features unavailable.

If you are using Internet Explorer within the University of Exeter try going to the Settings menu (probably the gear shape at the top right of this page), selecting "Compatibility View settings", unchecking "Display intranet sites in Compatibility View" and reloading this page.

Code

 Header...
/* * Poor man's pow() calculation with only positive integer exponents * Calculates "base" to the power of "exponent" */
int main(){
  ...
» double base=1.414; » int exponent=4, tmpexp; » double result; » result=1.0; » for (tmpexp=exponent; tmpexp>0; tmpexp=tmpexp-1) result=result*base; » printf("%f to the power %d is %f\n", base, exponent, result); » return 0;
}

Data

exponent (int)   tmpexp (int)
128   132
4
  
-143523840
base (double)   result (double)
136   144
1.414
  
4.93798658e-270

Memory

main()

128
129
130
131
132
133
134
135
exponent = 4
tmpexp = -143523840
136
137
138
139
140
141
142
143
base = 1.414
144
145
146
147
148
149
150
151
result = 4.93798658e-270

NB: the actual memory address of each variable is the
address shown plus 4288400096 (0xFF9BCAE0).

Show Advanced options

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

Output

1.414000 to the power 4 is 3.997584
                                                                                                                                                                                                                                                                       

Validate   Link-check © Copyright & disclaimer Share
Back to top