Test Results

 gcc -o Sum Sum.c -std=c99
[gabriel on gabriel-ferrers-macbook-pro-2]:/Users/gabriel/courses/SeniorSeminar/13-14/performance
 time ./Sum
499999999500000000

real	0m3.144s
user	0m3.057s
sys	0m0.010s
[gabriel on gabriel-ferrers-macbook-pro-2]:/Users/gabriel/courses/SeniorSeminar/13-14/performance
 time java Sum
499999999500000000

real	0m0.806s
user	0m0.760s
sys	0m0.046s
[gabriel on gabriel-ferrers-macbook-pro-2]:/Users/gabriel/courses/SeniorSeminar/13-14/performance
 time python3 Sum.py 
499999999500000000

real	3m29.741s
user	3m27.057s
sys	0m0.311s