int main()
{
int a, b;
int c = a+b;
int d = a*b;
int e = a-b;
int f = a/b;
printf("enter the numbers for a and b \n\r");
scanf("%d %d", &a, &b);
printf("the number is: %d", c);
getchar();
}

בברכה,
עידן

printf("Enter value to ch ");
ch = getchar();
printf("\n\rThe value of ch is: ");
putchar(ch);
a = (int)ch;
printf("\n\rThe value of a is: ");
putchar(a);
printf("\n\rChange the value of ch ");
flushall();
scanf("%c",ch);
printf("\n\rThe asci value of ch is: %d",ch);
}