Hi guys,

I am learning Objective-C and today at night I managed a simple program, an usual one from ordinary exercise.

Code:

```
#import <Foundation/Foundation.h>
int main (int argc, const char * argv[])
{
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
NSLog(@"Welcome to multiplication table test");
int rightAnswers; //the sum of the right answers
int wrongAnswers; //the sum of wrong answers
int combinations; //the number of combinations
NSLog(@"Please, input the number of test combinations");
scanf("%d",&combinations);
for(int i=0; i<combinations; ++i)
{
int firstInt=rand()%8+1;
int secondInt=rand()%8+1;
int result=(int)firstInt*secondInt;
int answer;
NSLog(@"%d*%d=",firstInt,secondInt);
scanf("%d",&answer);
if(answer==result)
{
NSLog(@"Ok");
rightAnswers++;
}
else
{
NSLog(@"Error");
wrongAnswers++;
}
}
int percent=(100/combinations)*rightAnswers;
NSLog(@"Combinations passed: %d",combinations);
NSLog(@"Answered right: %d times",rightAnswers);
NSLog(@"Answered wrong: %d times",wrongAnswers);
NSLog(@"Completed %d percent",percent);
if(percent>=70)NSLog(@"accepted");
else
NSLog(@"failed");
[pool drain];
return 0;
}
Well, if I input 3 combinations and complete 'em right, I am not getting 100%. Getting only 99%. Why?
If I count it on calculator it makes 100/3=33.3333333*3=100
Can somebody to explain to me, to absolute beginner?
```