Char to int

Projects Programming
1

Good morning..

I want to convert char to int. What function can do this?

Regards.

2 
int my_num = (int)my_char;
3

FutureEngineer:
Good morning..

I want to convert char to int. What function can do this?

Regards.

Is that a single char or a zero terminated array of chars (aka a C string) ?

char theChars[] = {"123"};  //automatically zero terminated
char aChar = '9';
int theInt;

void setup()
{
  Serial.begin(115200);
  Serial.println(theInt);
  theInt = atoi(theChars);
  Serial.println(theInt);
  theInt = aChar - '0';
  Serial.println(theInt);
}

void loop()
{
}

May I ask why you want or need to do it ?