Anyone can help me w these?

[Haziqrazale]

Write a program that declares at least two variables: x of type double and j of type int. Ask the user to
input a value for x (between 1.0 – 2.0) and then calculate and print out j so that it satisfies the following
table:

This sort of calculation is exactly what one must do when sorting data ready for plotting as a histogram.

 

[AngleWyrm]

The task is to partition the range [min .. max] into numSections of equal sectionWidth

sectionWidth = (max - min) / numSections	width of a section
sectionWidth × numSections = max - min	multiply both sides by numSections
numSections = (max - min) / sectionWidth	divide both sides by sectionWidth

Either numSections or sectionWidth must be provided to calculate the other.
In the table given, sectionWidth was implied to be 1/10, thus numSections was 10

 

[canada_roy]

I don't write C, but since this is a finite number of ranges (buckets), this is a situation where you can use some form of CASE statement. In C++, it would be a SWITCH CASE statement
https://beginnersbook.com/2017/08/cpp-switch-case/

Compare the x value to each of the ranges and assign j the appropriate value.