Thread: HELP with Array Question

I can barely read your program!

First thing: assign max to the very first value in the array, marks[0]. Do this either just before the for loop, or inside the top line of the for loop:

Code:

for(i=0,max=marks[0];i<9;i++) {
   if(max > marks[i])
       max = marks[i];
}

You have < instead of > in your code. You can assign max to an impossibly low value to start with, but using marks[0] is always a winner. Reverse this for min, but keep the initial assignment to marks[0].

[/code]

Yes, < is correct, of course.

Originally Posted by Adak

I can barely read your program!

First thing: assign max to the very first value in the array, marks[0]. Do this either just before the for loop, or inside the top line of the for loop:

Code:

for(i=0,max=marks[0];i<9;i++) {
   if(max > marks[i])
       max = marks[i];
}

You have < instead of > in your code. You can assign max to an impossibly low value to start with, but using marks[0] is always a winner. Reverse this for min, but keep the initial assignment to marks[0].

[/code]

thanks that works!
how do i print the error message "Character is Invalid" if a user enter something other then numbers?
Which method i should use?

i want to write a function for this program that will count no of students who are above and below average!
what will be the formula to get it?

Checking for invalid input in your program, can be done different ways. One way is to use the return from scanf() on line 22. It will return the number of items it has read and stored, or EOF if it fails.

Study this and run it to see an example.

Code:

#include <stdio.h>

int main(void) {
   int ok=0,mynumber=0;


   while(mynumber != -99) {
      printf("Enter an score or -99 to quit:  ");
      fflush(stdout);

      ok = scanf("%d",&mynumber);

      if(ok<1) {                        //scanf() failed
         printf("\ninvalid input\n");
         while((ok=getchar()) != '\n'); //clear out the input buffer
      }else {
         printf("My number is: %d\n",mynumber);
      }
   }

   printf("\n");
   return 0;
}