Weird thing happening with my code

I'm trying to solve this easy problem from SPOJ. http://www.spoj.com/problems/ARITH2/ Here is my code : (My logic might be kind of weird) http://ideone.com/upiUY8 The weird thing is that,I have commented out a cout line.If I uncomment that line,I get the right answer but commenting it gives the wrong answer.How is this even possible? Its just a printing statement. I don't understand. EDIT:Using scanf("%c",&str); doesn't work either.

comment c cout c++ weird problem

asked 04 Dec '14, 22:48

2★h1ashdr@gon
291●2●3●19
accept rate: 10%

edited 05 Dec '14, 00:10

2 Answers:

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here is your updated code :)

or

u can also do :
store the complete expression in a string, store s0 in temp = s[0]-'0';
start a loop from (i=2 to l && str[i]!= '=';i+=2 ) compare each character if encountered {'+','-','*','/'} evaluate by subtracting 48 or '0' from str[i+2] and display the output. :)

link

answered 05 Dec '14, 00:52

3★rjohari23
779●2●14
accept rate: 14%

edited 05 Dec '14, 01:13

So I guess the result is that scanf was having trouble reading my input and cin wins in this case. Thanks. But the question is,why is commenting and uncommenting the cout line giving different outputs? That's weird.

link

answered 05 Dec '14, 01:40

2★h1ashdr@gon
291●2●3●19
accept rate: 10%

edited 05 Dec '14, 01:40

u should have done scanf(" %c",&str) after scanning num1 as u can see there are spaces between each number and operator. :)

you can read more at http://www.geeksforgeeks.org/scansets-in-c/

(05 Dec '14, 02:11) rjohari233★

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question asked: 04 Dec '14, 22:48

question was seen: 837 times

last updated: 05 Dec '14, 02:11

Weird thing happening with my code

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