Horor_CPP_Done

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

#define DoWhile
double ecuation(double x){

    double y,a = 1.5;

    if(x<1.3){
        y = M_PI*pow(x,2) - (7/pow(x,2));
    }
    else if(x == 1.3){
        y = a*x + 7*sqrt(x);
    }
    else{
        y = log(x+7*sqrt(x));
    }
    return y;
}

#ifdef For
    void ForRange(double begin, double end, double step){
        for(; begin <= end; begin +=step)
            printf( "%lf\n", ecuation(begin));
    }
#endif

#ifdef While
    void WhileRange(double begin, double end, double step){
        while( begin <= end){
            printf( "%lf\n", ecuation(begin));
            begin+=step;
        }
    }
#endif

#ifdef DoWhile
    void doWhileRange(double begin, double end ,  double step){
        do{
            printf( "%lf\n", ecuation(begin));
            begin+=step;
        }while( begin <= end);
    }
#endif

void scanData(double *begin,double* end, double *step){
    printf("Introduceti inceputul intervalului >");
    scanf("%lf", begin);
    printf("Introduceti sfarsitul intervalului >");
    scanf("%lf", end);
    printf("Introduceti pasul >");
    scanf("%lf", step);
}

int main()
{
    double begin , end , step ;

    scanData(&begin,&end,&step);

    #ifdef For
        ForRange(begin,end,step);
    #endif

    #ifdef While
        WhileRange(begin,end,step);
    #endif

    #ifdef DoWhile
        doWhileRange(begin,end,step);
    #endif

    return 0;
}