for loop and if else statement help

[maker10]

Hi All,

I'm trying to figure out how I canFirst, enter the number of salaries to process: 4

Now enter the 4 salaries to be averaged.

Enter salary #1: 10000
Enter salary #2: 8000
Enter salary #3: -20000
*** Invalid entry. Salary must be positive. ***
Enter salary #3: 25000
Enter salary #4: -3333
*** Invalid entry. Salary must be positive. ***
Enter salary #4: 52000

The Average of the 4 salaries entered is: $ 23750.00

The Total of the 4 salaries entered is: $ 95000.0

Any help would be very appreciated
test a condition (negative or positive number) and then have it go back into the for loop. What I'm trying to accomplish is if the user enters a negative number the user will get an error and then should be re-prompted for a positive number like this:

#include <stdio.h>

int main(void)
{


int i, salary;
int numb_salaries = 0;
int sal_total = 0;
float total = 0;


printf("Welcome to the Employee Calculator Program. \n\n");

printf("This program calculates the average and total of as ");
printf("many employee salaries as you wish to enter. \n\n");

printf("First, enter the number of salaries to process: ");
scanf ("%i", &numb_salaries);

printf("\nNow enter the salaries to be averaged. \n\n");

/* Enter for loop */

for (i = 1; i <=numb_salaries; ++i)
{

printf("Enter salary #%i: ",i);
scanf ("%i", &salary);
sal_total = sal_total + salary;

if ( salary < 0 )
salary = -salary;

printf("*** Invalid entry. Salary must be positive. *** ");



}

printf ("Thanks for using the program.\n\n");

getchar(); /* Pause output */

return (0);
}

[Aia]

Inside the for loop substitute the if for a do/while.

...
do {
        printf("Enter salary #%i: ",i);
        fflush(stdout);

        if (!(scanf("%d", &i) == 1)) {
            fprintf(stderr, "Error, you didn't enter a valid input");
            break;
        }
    }while( i < 0);
...

Thank you for taking the time of reading and using code tags. If you add a c to , next time it makes it specific to the C language.[code=c], next time it makes it specific to the C language.

[ahamed101]

Use continue instead so that you can enter the salary again...

i = 1;
	while(i <= numb_salaries){

		printf("Enter salary #%i: ",i);
		scanf ("%i", &salary);
		if(salary < 0){
			printf("\n Please enter a valid salary...\n Press enter to re-try...");
			fflush(NULL);
			getchar();
			continue;
		}
		sal_total = sal_total + salary;
		i++;
	}

[maker10]

Hey man...thanks so much, that worked like a charm

[ahamed101]

Please mark the thread as Solved...
Thank You...

[WaltP]

Use continue instead so that you can enter the salary again...

i = 1;
	while(i <= numb_salaries){

		printf("Enter salary #%i: ",i);
		scanf ("%i", &salary);
		if(salary < 0){
			printf("\n Please enter a valid salary...\n Press enter to re-try...");
			fflush(NULL);
			getchar();
			continue;
		}
		sal_total = sal_total + salary;
		i++;
	}

Although the continue works in this situation, there are many times it won't work, so Aia's solution is better.

And what does fflush(NULL) do?

[Sci@phy]

And what does fflush(NULL) do?

Flushes everything (like a damn good toilet :) )