Hi everyone. I'm new to C programming. I'm writing a program that will prompt users to enter a number of amounts, the program will checK if amount is >= 0, then if condition is met the loop will continue until the number of amounts is completed, else the program will print " invalid number" and it will repromt the user:

Enter amount #1: 10000
Enter amoun #2: 8000
Enter amoun #3: -20000
*** Invalid entry. amoun must be positive. ***
Enter amount #3: 25000

I think i need two more loop, also work the conditional statements, but i can figure out how to do it.

Thanks,


[#include <stdio.h>



int main(void)
{
/*Declare Variables */

float amount,
float average = 0;
amounTotal = 0;

int NumAmount, counter;

/*Prompt to enter number of Amounts to calculate */

printf( "First, enter the number of amounts to process: " );
scanf ("%i", &NumAmount);
fflush (stdin);

/*Display number of amount to be averaged */

printf( "Now enter %i Amount to be averaged. \n\n" , NumAmount);

/*Start loop*/


for( counter = 1; counter <= NumAmount; ++counter ){

if (amount > 0)


printf( "Enter amount #%i:", counter); /*Prompt for amount*/
scanf("%2f", &amount);
fflush (stdin);
amountTotal += amount;



printf("\n");

if (amount < 0){

printf ( " invalid number:\n " );

}

}



average = amountTotal / NumAmount;

/* Print the results */
printf( "The Average of the %i Amounts entered is %.2f\n", NumAmount, average );

printf ( "The total of the %i Amounts enter are %.2f ", NumAmounts, amountTotal );

getchar();
return( 0 );

} ]

Hi ok below is the code I hope you needed, but you'll see that there are no new loops, I just simply used an if/else statement, but the main trick is in the else block where I used counter--;

Here is the code and compare it with yours, you'll see the differences.
Enjoy

PS please use code tags when posting code.

That's perfect, with a couple of adjustments it works great!. i don't know why i did not think about count--;

Thanks for your help!