Question

I am new to C++ and am having an issue converting a signed char to a double. Initial idea was to convert the signed char to a const char* and use atof to return the double.

signed char x = '100';
const char * cChar = x;
std::cout << atof(cChar);

What can I try to resolve this?

Answer 1

signed char x = 100;
double d = x;
cout << d;

const char * x = "100";
double d = atof(x);
cout << d;

'100' is wrong – you need either a const char * x = "100"; or a char x=100;