c++ char to Int

[mickey]

I I'm trying to to convert var a to int with this, but dosn't work? is the use of strtol correct? thanks

char * pEnd;
         int num;
	const char* a = "v"; //why with 'v' doesn't compile????
	num = strtol (a, &pEnd, 10);
	cout << " num " << num << endl;	//it print alway 0
	}

char * pEnd;
         int num;
	const char* a = "v"; //why with 'v' doesn't compile????
	num = strtol (a, &pEnd, 10);
	cout << " num " << num << endl;	//it print alway 0
	}

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[jacek]

const char* a = "v"; //why with 'v' doesn't compile????

Because 'v' is "char" not "char *".

it print alway 0

Did you try to use some valid number (like "1") instead of "v"?

[mickey]

Because 'v' is "char" not "char *".
Did you try to use some valid number (like "1") instead of "v"?

yes in that way work (it print 1); but I knew any char has a in value(eg 'a' =16; b='17', B=32). I'd like to obtain that number....maybe I'm doing the wrong question......

[jacek]

any char has a in value(eg 'a' =16; b='17', B=32). I'd like to obtain that number...

In that case you don't need any functions:

char c = 'v';
int v = c;

char c = 'v';
int v = c;

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