2019独角兽企业重金招聘Python工程师标准>>> 
一、C字符串转OC字符串
const char *cString = "This is a C string";
//对象方法
NSString *ocString1 = [[NSString alloc] initWithUTF8String:cString];
NSString *ocString2 = [[NSString alloc] initWithCString:cString encoding:NSUTF8StringEncoding];
NSString *ocString3 = [[NSString alloc] initWithFormat:@"%s",cString];
//类方法
NSString *ocString4 = [NSString stringWithCString:cString encoding:NSUTF8StringEncoding];
NSString *ocString5 = [NSString stringWithUTF8String:cString];
NSString *ocString6 = [NSString stringWithFormat:@"%s",cString];
二、OC字符串转C字符串
NSString *ocString = @"This is a OC string";
//对象方法
const char *cString1 = [ocString cStringUsingEncoding:NSUTF8StringEncoding];
const char *cString2 = [ocString UTF8String];