형변환: char <-> int

int main() 
{
    char str[10] = "123";
    int num = atoi(str);
    printf("num: %d\n", num);

    int num2 = 3;
    char str2[15];
    sprintf(str2, "%d", num);
    printf("str2: %s\n", str2);
}

 

char to int : atoi

int to char : sprintf