trying to write a program for school. the program is supposed to do the following:
Write a program that takes an input value (for example, a number 5). The output should be sum of all numbers from 1 to the value input by the user (in this example, the output would be 1+2+3+4+5 i.e. 15)
what I dont get is how if say I enter 20 how to get it to know that I entered 20 and just add all the numbers from 1 to 20 like count. would I use the SUB (subtract) command to aid in this? help-I'm stuck!!