Question

Develop a program which calculate 1+2+... ...+n and output the result to the screen.

n is defined by user input.



Input Specification:

Input a positive integer.

Output Specification:

For each test case, print in a line the value of 1+2+... ...+n by s=value



Sample Input: 35 Sample Output: s=630

Sample Input: 100 Sample Output: s=5050

Answer 1

Answer:

good night

Explanation:

have a peaceful and relaxing sleep