Objective-C

Generating Random ASCII Strings

See more PRNG Examples

Demonstrates how to generate random us-ascii strings. Objective-C

#import <CkoPrng.h>

BOOL success = NO;

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

success = NO;

CkoPrng *fortuna = [[CkoPrng alloc] init];

BOOL bDigits;
BOOL bLowercase;
BOOL bUppercase;

// Generate random strings having only lowercase chars (a-z)
// Disallow digits and uppercase and only allow lowercase
bDigits = NO;
bUppercase = NO;
bLowercase = YES;

int i;

NSLog(@"%@",@"-- only lowercase alpha (a-z)");
for (i = 1; i <= 10; i++) {
    // Generate 20-character strings.
    NSLog(@"%@",[fortuna RandomString: [NSNumber numberWithInt: 20] bDigits: bDigits bLower: bLowercase bUpper: bUppercase]);
}

// Allow both lowercase and uppercase alpha chars
bUppercase = YES;
NSLog(@"%@",@"-- lower and uppercase alpha (a-zA-Z)");
for (i = 1; i <= 10; i++) {
    // Generate 20-character strings.
    NSLog(@"%@",[fortuna RandomString: [NSNumber numberWithInt: 20] bDigits: bDigits bLower: bLowercase bUpper: bUppercase]);
}

// Allow digits (0-9)
bDigits = YES;
NSLog(@"%@",@"-- digits and lower/uppercase alpha (0-9a-zA-Z)");
for (i = 1; i <= 10; i++) {
    // Generate 20-character strings.
    NSLog(@"%@",[fortuna RandomString: [NSNumber numberWithInt: 20] bDigits: bDigits bLower: bLowercase bUpper: bUppercase]);
}

// Allow only digits (0-9)
bUppercase = NO;
bLowercase = NO;
NSLog(@"%@",@"-- only digits (0-9)");
for (i = 1; i <= 10; i++) {
    // Generate 20-character strings.
    NSLog(@"%@",[fortuna RandomString: [NSNumber numberWithInt: 20] bDigits: bDigits bLower: bLowercase bUpper: bUppercase]);
}