gcc 3.4.5 (Objective-C)

Version of implementation gcc (Objective-C) of programming language Objective-C

Version of gcc compiler applied to Objective-C programs.

Examples:

Factorial - C, Objective-C (67):

This example uses recursive factorial definition. Note that 13! and larger causes an overflow, so the last lines of the output look like this:

13! = 1932053504
14! = 1278945280
15! = 2004310016
16! = 2004189184

``````#include <stdio.h>

unsigned long long factorial(unsigned long long n)
{
if (n == 0) {
return 1;
} else {
return n * factorial (n - 1);
}
}

int main(void)
{
int n;
for (n = 0; n <= 16; n++) {
printf("%i! = %lld\n", n, factorial(n));
}
return 0;
}
``````

Hello, World! - C, Objective-C, C++ (68):

``````#include <stdio.h>

int main()
{
printf("Hello, World!\n");
return 0;
}
``````

Fibonacci numbers - C, Objective-C (122):

This example uses recursive definition of Fibonacci numbers. Note the difference from C++ example: loop counter must be declared outside of the loop, and `printf` is used for output instead of `std::cout`.

``````#include <stdio.h>

int fibonacci(int n)
{
return ( n<=2 ? 1 : fibonacci(n-1) + fibonacci(n-2) );
}

int main(void)
{
int n;
for (n=1; n<=16; n++)
printf("%d, ", fibonacci(n));
printf("...\n");
return 0;
}
``````

Quadratic equation - C, Objective-C, C++ (216):

This example works both for C and C++, as well as for Objective-C which is superset of C.

``````#include <math.h>
#include <stdio.h>

int main()
{
int A, B, C;
double D;
printf("A = ");
scanf("%d", &A);
if (A == 0) {
return 0;
}

printf("B = ");
scanf("%d", &B);
printf("C = ");
scanf("%d", &C);

D = B * B - 4 * A * C;
if (D == 0) {
printf("x = %f\n", -B / 2.0 / A);
return 0;
}

if (D > 0) {
printf("x1 = %f\nx2 = %f\n",
(-B + sqrt(D)) / 2.0 / A, (-B - sqrt(D))/ 2.0 / A);
} else {
printf("x1 = (%f, %f)\nx2 = (%f, %f)\n",
-B / 2.0 / A, sqrt(-D) / 2.0 / A, -B / 2.0 / A, -sqrt(-D) / 2.0 /A);
}
return 0;
}
``````

CamelCase - Objective-C (364):

``````#import <Foundation/Foundation.h>

NSString *camelCase(NSString *s) {
return [[[s capitalizedString] componentsSeparatedByCharactersInSet:[[NSCharacterSet characterSetWithCharactersInString:@"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"] invertedSet]] componentsJoinedByString:@""];
}

int main (int argc, const char * argv[]) {
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

NSLog(@"%@", camelCase(@"Test Example One"));
NSLog(@"%@", camelCase(@"exampleTwo "));
NSLog(@"%@", camelCase(@"!!! is_this_3RD EXAMPLE?.."));

[pool drain];
return 0;
}
``````

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