虽然这不是对Devang的问题的直接回答，但我相信下面的宏对寻找日志bool的人非常有帮助。这将注销bool值，并自动用变量名标记它。

#define LogBool(BOOLVARIABLE) NSLog(@"%s: %@",#BOOLVARIABLE, BOOLVARIABLE ? @"YES" : @"NO" )

BOOL success = NO;
LogBool(success); // Prints out 'success: NO' to the console

success = YES;
LogBool(success); // Prints out 'success: YES' to the console

NSArray *array1 = [NSArray arrayWithObjects:@"todd1", @"todd2", @"todd3", nil];
bool objectMembership = [array1 containsObject:@"todd1"];
NSLog(@"%d",objectMembership);  // prints 1 or 0

虽然这不是对Devang的问题的直接回答，但我相信下面的宏对寻找日志bool的人非常有帮助。这将注销bool值，并自动用变量名标记它。

#define LogBool(BOOLVARIABLE) NSLog(@"%s: %@",#BOOLVARIABLE, BOOLVARIABLE ? @"YES" : @"NO" )

BOOL success = NO;
LogBool(success); // Prints out 'success: NO' to the console

success = YES;
LogBool(success); // Prints out 'success: YES' to the console

苹果的FixIt提供了%hhd，它正确地给了我BOOL的值。

你可以这样做:

BOOL flag = NO;
NSLog(flag ? @"YES" : @"NO");

//assuming b is BOOL. ternary operator helps us in any language.
NSLog(@"result is :%@",((b==YES)?@"YES":@"NO"));