11字符串测试1:下列字符串定义正确的是:
A: String str="Hello World!";
B: Str str="Hello World!";
C: var str="Hello World!";
D: var str='Hello World!';
A: String str="Hello World!";
B: Str str="Hello World!";
C: var str="Hello World!";
D: var str='Hello World!';
举一反三
- 下列定义字符串类string对象的语句中,错误的是( )。 A: string str; B: string str( “Hello, world” ); C: string str = “Hello, world”; D: string str = ‘Hello, world’;
- 如何将字符串“Hello World”写入a.txt文件内?FILE *file; file = fopen("a.txt","w"); A: char str = "Hello World"; fputs(&str,file); B: char str = "Hello World"; fputc(&str,file); C: char str = "Hello World"; fput(&str,file); D: char str = "Hello World"; fputs(str,file);
- 已知$str = " Hello World! ";下列说法正确的是: A: trim($str)结果是" Hello World!"; B: ltrim($str)结果是"Hello World! "; C: trim($str)结果是" Hello World!"; D: trim($str)结果是"Hello World!";
- 有这样的字符串对象的定义StringBuffer str = "hello world"; str.reverse();str执行此方法后str字符串的值是"world hello"
- 下面代码的运行结果是( )。var str= "hello world" ;var str1=str.toUpperCase();var str2=str.toLowerCase() ;alert (str1) ;alert (str2) ; A: "HELLO WORLD","HELLO WORLD" B: "HELLO WORLD","hello world" C: "hello worl","HELLO WORLD" D: "hello world","hello world"