Using argument char argv[] in system()

arguments, c++, command-line-arguments

Solution

Use `std::string`, like

std::string const command = std::string( "perl test.pl " ) + argv[1];
system( command.c_str() );

You cannot add two raw pointers.

But `std::string` provides an overload of the `+` operator.

Problem

I need to execute a perl script from my c++ code. This is done with system(). Now I need to pass the second argument from my code: ``` int main(int argc, char * argv[]) ``` into my system() like this: ``` char *toCall="perl test.pl "+argv[1]; system(toCall); ``` Now it brings the error: "invalid operands of types ‘const char [14]’ and ‘char**’ to binary ‘operator+’" What am I doing wrong?

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