pvjc24/cv3/program.c

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

#define SIZE_OF_ARRAY 100
#define LINE_SIZE 2

double powering(double, int);

int main()
{
    double result_of_main=0;
    double array_of_numbers[SIZE_OF_ARRAY];
    int counter=0;
    int result;
    double pow_result;
    while(1){
        double x=0;
        result=reading_input(&x);
        if(result==0||result==2){
            break;
        }
        array_of_numbers[counter]=x;
        counter++;
    }
    if(result==0){
        return 0;
    }
    for(int j=1; j<counter; j++){
        //double rawPow = pow(array_of_numbers[0],(counter-j)-1);
        //double roundedPos = round(rawPow*100)/100;
        double true_power=powering(array_of_numbers[0],(counter-j)-1);
       // printf("RAW: %f, ROUNDED: %f, true %f\n", rawPow, roundedPos,true_power);

        result_of_main += array_of_numbers[j]*true_power;
    }
    printf("Vysledok je: %.2f\n",round(result_of_main * 100) / 100);
    return 0;
}
//ceil(result_of_main * 100) / 100)
int reading_input(double *number){
    char buffer[SIZE_OF_ARRAY];
    fgets(buffer,SIZE_OF_ARRAY,stdin);
    for(int j=0; buffer[j]!='\0'; j++){
        if (buffer[j]>='0'&&buffer[j]<='9') {
            continue;
        }
        if (buffer[j]=='.') {
            continue;
        }
        if(buffer[j]=='\n'){
            buffer[j]='\0';
            break;
        }
        printf("You have entered wrong number.\n");
        return 0;
    }
    if(buffer[0]=='\0'){
        return 2;
    }
    *number=atof(buffer);
    return 1;
}
double powering(double number, int counter){
    double result=1;
    for(int i=0; i<counter; i++){
        result =result * number;
    }
    return result;
}