StdStringTrimTest.cpp

#include 
     
      int main(){    std::string str("   字符串   String    ");    std::cout << str << std::endl;    std::cout << str.size() << std::endl;    str.erase(str.find_first_of(' '), str.find_first_not_of(' '));    str.erase(str.find_last_not_of(' ') + 1);    std::cout << str << std::endl;    std::cout << str.size() << std::endl;    return 0;}
     

CStyleStringTrimTest.c

#include 
     
      #include 
      
       #define STRING_LENGTH 10000int main(){    const char *text = "   字符串   String    ";    printf("%s\n%u\n", text, strlen(text));    while (*text == ' ')        ++text;    char str[STRING_LENGTH];    strcpy(str, text);    size_t i = strlen(str) - 1;    while (str[i] == ' ')        str[i--] = '\0';    printf("%s\n%u\n", str, strlen(str));    return 0;}
      
     

Compilation.bat

g++ -std=c++11 StdStringTrimTest.cpp -o StdStringTrimTestgcc -std=c11 CStyleStringTrimTest.c -o CStyleStringTrimTest