Thread: Large amount of data input

I have this HW problem
Write the program with two functions to solve the following problem.
Theres a pay raise for 100 faculty members. They are considering a pay increase of 5%. Write a program that will prompt for and accept the current salary for each of the faculty members, then calculate and display their individual pay increases. At the end of the program, print the total faculty payroll before and after the pay increase.

Any ideas how I can do this for 100 variables? I cant printf/scanf manually for 100 people can I?

Just a tip in the right direction would help, thanks!

Any ideas how I can do this for 100 variables?

Why do you think you need 100 variables?

I cant printf/scanf manually for 100 people can I?

You can, but there are probably easier ways.

Jim

Use an array and a loop.

Is an array even required? It seems that it would be possible to accomplish the objectives with five or fewer variables and no arrays.

Jim

Originally Posted by jimblumberg

Is an array even required? It seems that it would be possible to accomplish the objectives with five or fewer variables and no arrays.

Jim

How could you display individual pay increases for up to 100 people with only 5 variables? Could you help a little more than just telling me that? I dont need the answer to the homework, just a little direction in the right way.

We have not learned arrays yet in this course, even though i know how to use them, we cant for this problem.

Originally Posted by Rednally

How could you display individual pay increases for up to 100 people with only 5 variables? Could you help a little more than just telling me that? I dont need the answer to the homework, just a little direction in the right way.

We have not learned arrays yet in this course, even though i know how to use them, we cant for this problem.

@jimblumberg

Your assignment doesn't say to print the salaries for all the employees. So just to retrieve the salaries from the user in a loop and compute the total salary. And then print the total current salary at the conclusion of the loop. Lastly compute the new salary for the salary increase and print that value.

Jim

Originally Posted by jimblumberg

Your assignment doesn't say to print the salaries for all the employees.

Not trying to be annoying, but it does:

Originally Posted by Rednally

Theres a pay raise for 100 faculty members. They are considering a pay increase of 5%. Write a program that will prompt for and accept the current salary for each of the faculty members, then calculate and display their individual pay increases. At the end of the program, print the total faculty payroll before and after the pay increase.

It sounds like you will need a variable for the before increase total, the after increase total, and input salary. Since the array approach is off limits, you will have to interleave input with output.

For example:

Enter salary for employee 1: 500
Employee 1 has an increase of $25, and their new salary is $525.
Enter salary for employee 2: 1435
Employee 2 has an increase of $71.75, and their new salary is $1506.75.

Try coding that.

Originally Posted by whiteflags

Not trying to be annoying, but it does:

It sounds like you will need a variable for the before increase total, the after increase total, and input salary. Since the array approach is off limits, you will have to interleave input with output.

For example:

Enter salary for employee 1: 500
Employee 1 has an increase of $25, and their new salary is $525.
Enter salary for employee 2: 1435
Employee 2 has an increase of $71.75, and their new salary is $1506.75.

Try coding that.

Code:

#include <stdlib.h>
#include <stdio.h>


main() {
	int i;
	int sal;
	int sn;
	int pr;
	int salpayraise;
	int numberCount=0;
	printf("How many salarys? \n");
	scanf("%d", &sn);
	printf("%d salaries\n", sn);


	while (numberCount != sn) {


		printf("\nEnter Salary: \n");
		scanf("%d", &sal);
		pr = (sal * 5) / 100;
		salpayraise = pr + sal;
		numberCount++;
		printf("Salary payraise is: %d and original was: %d", salpayraise,sal);
	}
	
	


	system("pause");
}

This was as close as I could get to what I needed.

Code:

/*Jake Yllander
Write program with 2 functions, that shows the pay raise of 5% for up to 100 employees.
Prompt user to enter salary, calculate and display pay raise for each individual.
Then print total payroll before and after pay raise.




*/
#include <stdlib.h>
#include <stdio.h>
void howManySals();
main() {
	int i;
	int sal;
	int sn;
	int pr;
	int salpayraise;
	int numberCount = 0;
	int total = 0;
	int totalRaise = 0;
	int sum = 0;
	int sum2 = 0;
	howManySals();
	scanf("%d", &sn);
	printf("%d salaries\n", sn);


	while (numberCount != sn) {


		printf("\nEnter Salary: \n");
		scanf("%d", &sal);
		pr = (sal * 5) / 100;
		salpayraise = pr + sal;
		numberCount++;
		sum += sal;
		sum2 += salpayraise;
		total = sum;
		totalRaise = sum2;
		printf("Salary payraise is: %d and original was: %d", salpayraise, sal);
	}
	printf("\nTotal salary before: %d, Total salary after: %d \n", total, totalRaise);




	system("pause");
}
void howManySals() {
	printf("How many salaries? \n");
}

Originally Posted by laserlight

That seems to meet the letter of the academic requirement ("write program with 2 functions") without meeting the spirit of the requirement: instead of calling howManySals(), you might as well place the printf there as there is nothing to be gained whether by readability or reusability in having that helper function.

Rather, if you wanted to call a helper function in that place, a better option would to have the helper function request for the number of salaries, then read the number of salaries, optionally printing it (or the printing could be done in main).

Another option is to move the entire body of the loop into a helper function dedicated to processing the salary raise for a single salary. You could also move the computation of a salary raise into a helper function.

By the way, you should avoid cryptic variable names like sal, sn, and pr. Just writing salary, numberOfSalaries (or salaryCount), and payRaise will do. Actually, you don't really need payRaise because you can compute:

Code:

salaryAfterRaise = (salary * 5) / 100 + salary;

speaking of which you should consider if salary values should be of type double rather than int due to integer division. Money values will often be in a fixed point type rather than floating point, but this may be beyond the scope of your exercise (or perhaps you read the salary values in cents).

Another thing: it looks like you don't need sum and sum2 since they are essentially aliases for total and totalRaise. totalRaise sounds like a poor name though: it is really totalAfterRaise (or payrollAfterRaise since total would be more accurately renamed to payroll), whereas totalRaise could be misinterpreted as the total amount of pay raise, i.e., difference between payroll before the raise and payroll after the raise.

Thank you for all of your input!

Do you know of somewhere that has multiple beginner level problems such as this one, with the answers included? My textbook does not include the answers.