How we convert character into integer?????

Answer 1

If you need the ASCII value,

char ch = 'd';
int a = ch; // int a = (int) ch is redundant.

To convert the character into integer (eg. '1' to 1),

char ch = '1';
int c = ch - '0';

Answer 2

char c = 'a';
int x = (int)c;

Answer 3

it's really work or not?

Answer 4

char a ;
cout << int (a);