Test

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

int main()
{
float messwerte[5];

messwerte[0] = 23.0;
messwerte[1] = 22.2;
messwerte[2] = 21.7;
messwerte[3] = 20.9;
messwerte[4] = 20.5;

printf("erster Wert (Index 0): %.2f\n", messwerte[0]);
printf("letzer Wert (Index 4): %.2f\n", messwerte[4]);

    system("PAUSE");
    return 0;
}