1. Use a printf statement to print out the value of the integer variable sum
printf("%d", sum);
2. Use a printf statement to print out the text string "Welcome", followed by a newline.
printf("Welcome\n");
3. Use a printf statement to print out the character variable letter
printf("%c", letter);
4. Use a printf statement to print out the float variable discount
printf("%f", discount);
5. Use a printf statement to print out the float variable dump using two decimal places
printf("%.2f", dump);
6. Use a scanf statement to read a decimal value from the keyboard, into the integer variable sum
scanf("%d", &sum);
7. Use a scanf statement to read a float variable into the variable discount_rate
scanf("%f", &discount_rate);
8. Use a scanf statement to read a single character from the keyboard into the variable operator. Skip leading blanks, tabs and newline characters.
scanf(" %c", &operator);