C programming about scanf and array [closed] - c

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I try to make this program when I enter 3 5 2 5 5 5 0
=>
Enter numbers: 3 5 2 5 5 5 0
The largest number is 5
The occurrence count of the largest number is 4
int main()
{
int a[10];
int i,max, count;
printf("Enter numbers: ");
for(i=0;i<10;i++)
{
scanf("%d",&a[i]);
}
max=a[0];
count=1;
for(i=1;i<10;i++)
{
if(max<a[i])
{
count = 1;
max = a[i];
}
else if(max==a[i])
{
count++;
}
}
printf("The largest number is %d\n",max);
printf("The occurrence count of the largest number is %d",count);
return 0;
}
It is my code, but it is totally wrong..
I don't know what should I do
please help me

Answer 1

You've got several errors.
In your first loop, you want to read into a[i], not a[10].
Your code corrently assumes you always type in 10 numbers. It looks like you wanted a value of 0 to end the list. Me, I'd use end-of-file to end the list. To check for 0 you need an extra line if(a[i] == 0) break; in the loop. To check for EOF (or other non-numeric input which will cause problems) you could check to see that scanf returns 1.
In case you enter less than 10 numbers, you'll need a new variable that knows how many variables you actually entered. I set nn = i after the first loop.
Then you just need to change the second loop to run from 1 to nn, not 10.
Putting this all together, we have:
#include <stdio.h>
int main()
{
int a[10];
int i,max, count, nn;
printf("Enter numbers: ");
for(i=0;i<10;i++)
{
if(scanf("%d",&a[i]) != 1) break;
if(a[i] == 0) break;
}
nn = i;
max=a[0];
count=1;
for(i=1;i<nn;i++)
{
if(max<a[i])
{
count = 1;
max = a[i];
}
else if(max==a[i])
{
count++;
}
}
printf("The largest number is %d\n",max);
printf("The occurrence count of the largest number is %d\n",count);
return 0;
}
This seems to work.

Answer 2

Code is OK other than the user needs to enter 10 numbers.
There is no need to store previous numbers, so code can simply examine each new number until '\n' is encountered. Just keep look for the end-of-line before looking for the number.
#include <limits.h>
#include <stdio.h>
#include <ctype.h>
int main(void) {
int count = 0;
int max = INT_MIN;
printf("Enter numbers: ");
for (;;) {
int ch;
int num;
while (isspace(ch = fgetc(stdin)) && ch != '\n') {
;
}
if (ch == '\n' || ch == EOF) break;
ungetc(ch, stdin);
if (scanf("%d", &num) != 1) break;
if (num >= max) {
count++;
if (num > max) {
max = num;
count = 1;
}
}
}
printf("The largest number is %d\n", max);
printf("The occurrence count of the largest number is %d", count);
return 0;
}