Although C++ can not uppercase or lowercase a string, it can uppercase or lowercase an individual character, using the toupper() and tolower() standard functions respectively. This means we need to be able to isolate the characters of a string so we can apply the toupper() or tolower()...
In this case, we created a functiontoLowerthat takeschar*, where a null-terminated string is stored and asize_ttype integer denoting the string’s length. The function allocates the memory on the heap using thecallocfunction; thus the caller is responsible for deallocating the memory before ...
return::tolower(c); }); std::cout<<str<<std::endl; return0; } DownloadRun Code Output: convert string lowercase 4. Using Boost Library Finally, we can useboost::algorithm::to_lowerto convert each element ofstd::stringto lower case. We can also useboost::algorithm::to_lower_copy, ...
ToLowerCase() 使用預設地區設定的規則,將此String中的所有字元轉換成小寫。 ToLowerCase(Locale) 使用指定Locale的規則,將這個String中的所有字元轉換成小寫。 ToLowerCase() 使用預設地區設定的規則,將此String中的所有字元轉換成小寫。 C# [Android.Runtime.Register("toLowerCase","()Ljava/lang/String;","...
str=str.toLowerCase(); System.out.println(str);//我喜欢java } 1.1.10 valueOf(查阅API) /** 将其他类型转换为字符串类型*/ public void testValueOf(){ double pi=3.1415926; int value=123; boolean flag=ture; char[] charArr={'a','b','c','d','e','f','g'}; ...
();13//定义一个字符串来进行拼接14String str = "";15//使用循环遍历16for(inti=0;i<arrays.length;i++){17//判断18if(arrays[i]>='a'&&arrays[i]<='z'){19str+=(arrays[i]+"").toUpperCase();20}elseif(arrays[i]>='A'&&arrays[i]<='Z'){21str+=(arrays[i]+"").toLowerCase()...
Learn how to convert a string to uppercase in C with examples and detailed explanations.
打印出字符串，然后调用toUpperCase()方法将字符串转换为大写并打印，最后调用toLowerCase()方法将字符串...
11) string.uppercase A string containing all the characters that are considered uppercase letters. On most systems this is the string 'ABCDEFGHIJKLMNOPQRSTUVWX YZ'. Do not change its definition — the effect on the routines lower() and swapcase() is undefined. The specific value is locale-dep...
String toLowerCase() 使用默认语言环境的规则将String中的所有字符都转换为小写 String toUpperCase() 使用默认语言环境的规则将String中的所有字符都转换为大写 static String valueOf(int i) 返回int 参数的字符串表示形式 char[] toCharArray() 将此字符串转换为一个字符数组 String replace(CharSequence oldstr,...