Breaking a three-digit integer. Is this a good way?

sheep19 · 2008-07-08T15:44:51

I recently had a computer science exam and I messed it up a bit. There was an exercise to break a three digit number to three numbers. I didn't do it..because it's different to be under the pressure than in your room. So I sat and did it now. I'm asking if this is good way to do it(it works by the way) #include <iostream> int main() { int num; std::cout << "Enter a number between 100 and 999: "; do { std::cin >> num; if( num < 100 || num > 999 ) std::cout << "100-999 please. Enter it again: "; } while ( num < 100 || num > 999 ); int i, j, k; for( int a = 900; a >= 100; a -= 100 ) { if( num / a == 1 ) { i = a / 100; break; } } for( int a = 90; a >= 10; a -= 10 ) { if( (num - i * 100) / a == 1 ) { j = a / 10; break; } if( a == 20 ) j = 0; } k = num - (i * 100) - (j * 10); std::cout << "i = " << i << ", j = " << j << ", k = " << k << "\n"; system("pause"); return 0; }

For Beginners

Started by sheep19 July 04, 2008 09:37 AM

49 comments, last by Cecil_PL 15 years, 9 months ago

Cecil_PL

122

July 08, 2008 03:44 PM

This is why I love python.

#splits a number into a list of digitsdef split_number(n):    return list(str(n))#returns whether n is a palindromedef is_palindrome(n):    return (str(n) == str(n)[::-1])

Breaking a three-digit integer. Is this a good way?

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Breaking a three-digit integer. Is this a good way?

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