在Objective-C中使用stringByReplacingOccurancesOfString的问题

- (NSString *)stringByReplacingOccurrencesOfString:(NSString *)target withString:(NSString *)replacement

NSString *originalString = @"Hello, World!";
NSString *targetString = @"World";
NSString *replacementString = @"Objective-C";

NSString *newString = [originalString stringByReplacingOccurrencesOfString:targetString withString:replacementString];

NSLog(@"%@", newString); // 输出：Hello, Objective-C!