13-1 Simple way

[tadej5553]

main.m

Code: (Objective-C)

#import <Foundation/Foundation.h> 
   
float array_average(float *f)
{
    float sum;
    int i = 10;
    
    while(i--)
        sum += *f++;
        
    return sum/10;
} 

int main (int argc, char *argv[]) 
{ 
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; 
    
    float array[] = {2,1,2,3,4,5,6,7,8,9};
    
    NSLog(@"the average is: %f", array_average(array));
        
    [pool drain]; 
    return 0; 
}