1. Add two numbers and store the answer in a variable named SUM. Ask the user to input two values. Read in the first number and store it in a variable named num1, read in the second number and store it in a variable named num2. Check to see if each of the numbers you read are a zero, if they are ask the user to in put a different number. 2. Add and print the class average. Store the class average in a variable named Average. Create a counter to count the number of grades that were entered and store it in the variable counter. Create a loop to enter each grade. Terminate the loop once it reaches 50 iterations.

3. Check to see if the number the user inputs is positive or negative. Ask the user to input a number. Read and store the number in a variable named NUM. Check to see if the number is positive, negative, or zero. Output a phrase to the user telling them if the number is positive, negative, or zero.