Thread: find the largest element

So first of my program is written in a foreign language, sorry about that.
What i'm trying to program is a calculator that sums upp numbers. And the program will terminate when the user writes a negative number.
I have been able to construct the first part of the program. the part which sums up float/int numbers. but where i have run into a problem is the second part, which is to find the largest number.

Code:

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


    int main ()
{
    float tal, summan=0, max=0;
    int i;
    for (;;)
    {
    printf("Skriv in ett tal att summera: ");
    scanf("%f", &tal);
        if (tal>=0) {
            summan+=tal;
            printf("Summan är: %.2f\n", summan);
        }
        else break;
    }
    for (i=0; i<tal; i++)
    {
        if (max<tal)
        {
            max=tal;
printf("Det största inmatade talet var %.2f\n", max);
        }
    }
    return 0;
}

You want to record the maximum while you are reading numbers from the user, there's nothing you can do after they've been processed.