Error Cannot Convert Std String To Const Char
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Convert String To Const Char C++
the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Cannot convert ‘std::string’ to
Convert String To Const Char Arduino
‘const char* up vote 2 down vote favorite 1 Hi can any one tell what wrong with this code ?. string s=getString(); //return string if(!strcmp(s,"STRING")){ //Do something } while compiling I am getting the error like error: cannot convert ‘std::string’ to ‘const char*’ for argument ‘1’ to ‘int strcmp(const char*, const char*)’| c++ share|improve this question edited May 29 '13 at 9:47 Jeyaram 5,37221643 asked May cannot convert 'string' to 'const char*' arduino 29 '13 at 9:40 Haris 6,62443255 2 You want if ( s == "STRING" ). strcmp is the const char* version. (You could use if (!strcmp(s.c_str(), "STRING"), but don't). –BoBTFish May 29 '13 at 9:42 1 Did you look at the documentation for strcmp to see what arguments it accepts? Why do you even use strcmp like that when you already have an std::string that defines operator==? –Jon May 29 '13 at 9:42 5 @BoBTFish (s == "STRING") in this case. –ForEveR May 29 '13 at 9:43 5 @Rakkun: that's not good practice... the std::string type overloads comparison to a const char* to avoid creating a std::string temporary as your suggested code does.... –Tony D May 29 '13 at 9:48 4 The beauty of C++: Where string == "foo" means exactly what it says. –stefan May 29 '13 at 9:51 | show 3 more comments 5 Answers 5 active oldest votes up vote 11 down vote accepted strcmp accepts const char* as argument. You can use c_str method: if(!strcmp(s.c_str(),"STRING")) Or just use overloaded operator== for std::string: if(s == "STRING") share|improve this answer answered May 29 '13 at 9:42
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Cannot Convert String To Const Char * For Argument Atoi
Us Learn more about Stack Overflow the company Business Learn more about hiring no known conversion for argument 1 from 'string' to 'const char*' arduino developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the string to const char arduino Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up .cpp:23: error: cannot convert ‘std::string’ to http://stackoverflow.com/questions/16810485/cannot-convert-stdstring-to-const-char ‘const char*’ for argument ‘1’ to ‘int atoi(const char*)’ up vote 1 down vote favorite Here a basic code I'm trying to run But I'm having trouble with stoi (it's c++) I keep getting error: ‘stoi’ was not declared in this scope I tried atoi and strtol with this error .cpp:23: error: cannot convert ‘std::string’ to ‘const char*’ for argument ‘1’ to ‘int atoi(const char*)’ The http://stackoverflow.com/questions/30971933/cpp23-error-cannot-convert-stdstring-to-const-char-for-argument-1-t code: using namespace std; int main(){ string numberGuessed; int intNumberGuessed = 0; do { cout << "Guess a numeber btw 1 - 10: " << endl; getline(cin, numberGuessed); intNumberGuessed = atoi(numberGuessed); cout << intNumberGuessed << endl; } while(intNumberGuessed != 4); cout<< "you win" << endl; return 0; } c++ string share|improve this question edited Jun 22 '15 at 5:12 Hi-Angel 1,33951540 asked Jun 22 '15 at 3:55 kirk mgurk 814 1 Use e.g. atoi(numberGuessed.c_str());. –Jonathan Potter Jun 22 '15 at 3:56 std::stoi requires you to #include
problem with an assignment that I'm not sure how to fix I'm getting the following error: accountdb.cpp:55: error: cannot https://www.daniweb.com/programming/software-development/threads/412343/error-convert-string-to-const-char convert std::string to const char* for argument 1 to int strcmp(const char*, const char*) Here is my header file: #ifndef ACCOUNTDB_H #define ACCOUNTDB_H #include "account.h" #include