Netter Versuch der Verarsche.

[Tagwächter]

void summe_float() {
    float x1=10000.0;
    float x2=-1.0e-3/9;
    float x3=25.0e2;
    float x4=1.0e-3/7;
    float x5=-12.5e3;
    float y=x1;
    printf("Test A1: (Addition schrittweise):%.21f \n",y);
    y=y+x2;
    printf("Test A2: (Addition schrittweise):%.21f \n",y);
    y=y+x3;
    printf("Test A3: (Addition schrittweise):%.21f \n",y);
    y=y+x4;
    printf("Test A4: (Addition schrittweise):%.21f \n",y);
    y=y+x5;
    printf("Test A5: (Addition schrittweise):%.21f \n",y);

    float z;
    z=x1+x2+x3+x4+x5;
    printf("Test B: (Addition direkt):%.21f \n",z);
return;
}

Denksport:

Test A1: (Addition schrittweise):10000.000000000000000000000 
Test A2: (Addition schrittweise):10000.000000000000000000000 
Test A3: (Addition schrittweise):12500.000000000000000000000 
Test A4: (Addition schrittweise):12500.000000000000000000000 
Zahl X5: -12500.000000000000000000000 
Test A5: (Addition schrittweise):0.000000000000000000000 
Test B: (Addition direkt):0.000000000000000000000 

Netter Versuch.