How do I convert string variable to char*??

kaushiknanda

hey,
I am pretty new to c++ programming and I am supposed to use system(const char*). But I have a string variable as the argument. Can any1 please help me how to use this string variable as argument to system()? thanks in advance.
-kaushik

kaushiknanda

Quote:

Originally Posted by kaushiknanda

hey,
I am pretty new to c++ programming and I am supposed to use system(const char*). But I have a string variable as the argument. Can any1 please help me how to use this string variable as argument to system()? thanks in advance.
-kaushik

i m getting the following error:

cannot convert 'std::string' to 'constant char*' for argument '1' to 'int system(constant char*)'

scruggsy

Quote:

Originally Posted by kaushiknanda

i m getting the following error:

cannot convert 'std::string' to 'constant char*' for argument '1' to 'int system(constant char*)'

std::string has a c_str() function that returns a const char*, i.e.:

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 std::string stringThing("A C++ string");

const char* cStyleString = stringThing.c_str();

Quick google-search or peek at the index of a C++ reference book should get you acquainted with other useful std::string methods.

kaushiknanda

Quote:

Originally Posted by scruggsy

std::string has a c_str() function that returns a const char*, i.e.:

Expand|Select|Wrap|Line Numbers

 std::string stringThing("A C++ string");

const char* cStyleString = stringThing.c_str();

Quick google-search or peek at the index of a C++ reference book should get you acquainted with other useful std::string methods.

thanks a lot ...it worked

How do I convert string variable to char*??

re: How do I convert string variable to char*??

re: How do I convert string variable to char*??

re: How do I convert string variable to char*??

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