I'm new to C++, what can I do to perform something like:
getline(textfile, txtline);
int i = 0;
while (textline[i] != ' ') // Until space
{
if (isdigit(txtline[i]) == true)
int n = atoi(txtline[i]);
// Then code to use n
i++;
}
atoi()
is generating an error, but am I not just passing a char to it?
Here's the full error:
myqueens.cpp:32:11: error: no matching function for call to 'atoi'
int n = atoi(txtline[i]);
^~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/stdlib.h:132:6: note: candidate function not viable: no known conversion from 'value_type' (aka 'char') to 'const char *' for 1st argument; take the address of the argument with &
int atoi(const char *);
^
The error is that atoi() expects a string (i.e. char*). So, you can get the message after debugging: cannot convert from 'const char' to 'char[]'.
So, if you want to convert textline[i] to int, you can use