can be computed using the following formula:

r$=4(1-1/3=1/5-1/7=1/9-1/11+...)$

Write a program that displays the result of $4(1-1/3=1/5-1/7+1/9-1/11)$

and $4(1-1/3+1/5-1/7+1/9-1/11+1/13).$ Use $1\mathrm{.}0$ instead of $1$ in your program.

$.$ Use $1\mathrm{.}0$ instead of $1$ in your program.