OC String NSString Common Operation series 01

• OC String Common Operations

1. NSString Basic Operation

1 /**2 * NSString string Common operations3 * Initwithformat: Construction method4 * initwithutf8string: Convert C string to OC string5  */6 #import<Foundation/Foundation.h>7 8 intMainintargcConst Char*argv[]) {9 @autoreleasepool {Ten          One         Char*str1="Hello str1";//C language String ANSLog (@"%s", str1);//Print Result: Hello str1 -          -NSString *str2=@"Hello str2";//the string in OC theNSLog (@"%@", str2);//Print Result: Hello str2 -          -         //Initwith ... Construction Method -NSString *str3=[[nsstring Alloc]initwithformat:@"Hello STR3"]; +NSLog (@"%@", STR3);//Print Result: Hello str3 -          +         //Initwithformat ... Formatting strings ANSString *str4=[[nsstring Alloc]initwithformat:@"I am the first%d string STR4",4]; atNSLog (@"%@", STR4);//I am the 4th string of STR4 -          -         //Converting a C-language string to an OC string -NSString *str5=[[nsstring alloc]initwithutf8string:"Hello STR5"]; -NSLog (@"%@", STR5);//Print Result: Hello STR5 -      in     } -     return 0; to}

　

OC String nsstring common operation series