In this C++ Tutorial we will explore the toupper() function, which can be used to convert a single character to it’s uppercase version. We will proceed to show exactly how one can convert an entireC++ Stringto uppercase, using the toupper() function. C++ toupper() Syntax The C++ touppe...
void toggle_str(string str) { for(int i=0;str[i]!=‘\0’;i++) { if(isupper(str[i]) ) str[i]= tolower(str[i]); elseif(islower(str[i]) ) str[i] = toupper(str[i]); } cout<<“\nThe converted string: “<< str; ...
Usestd::transform()andstd::toupper()to Convert String to Uppercase std::transformmethod is from the STL<algorithm>library, and it can apply the given function to a range. In this example, we utilize it to operate onstd::stringcharacters range and convert eachcharto uppercase letters using...
http://en.cppreference.com/w/cpp/string/char_traits The simple way would be to inherit fromstd::char_traits<char>and implement the overloads ofassign(),andto_char_type()converting lower case chars to upper case. Then,typedefstd::basic_string<char, ucase_char_traits<char> > ucase_string...
C++ - Change string from lowercase to uppercase using class C++ - Change string to sentence case C++ - Find smallest number in the array C++ - Sort an array in ascending order C++ - Sort an array in descending order C++ - Convert the temperature from Celsius to Fahrenheit C++ - Conv...
shrink_to_fit():将容量调整为等于当前大小。 #include <string> #include <iostream> int main() { std::string str = "Hello"; str.reserve(50); // 将容量扩展到至少 50 std::cout << "New Capacity: " << str.capacity() << std::endl; ...
At first we will implement the toUpper function. The purpose of this function is to convert all lowercase letters from a String to uppercase Letters.Example: 'aBc 3' becomes 'ABC 3'. It's important that letters like numbers or spaces won't be converted to anything different.#include <...
cpp #include <algorithm> #include <cctype> #include <string> 2. 编写转换函数 接下来,我们编写两个函数,一个用于将字符串转换为大写,另一个用于将字符串转换为小写。 转换为大写 cpp std::string toUpperCase(const std::string& str) { std::string uppercaseStr = str; ...
TheRtlUpcaseUnicodeStringToCountedOemStringroutine translates a given Unicode source string into an uppercase counted OEM string using the current system OEM code page. Syntax cppΑντιγραφή NTSYSAPI NTSTATUSRtlUpcaseUnicodeStringToCountedOemString( POEM_STRING DestinationString, [in...
This post will discuss how to convert each character of a string to uppercase in C++. 1. Using Boost Library A simple and efficient solution is to use theboost::algorithm::to_upperto convert each character ofstd::stringto uppercase. ...