What is the error of this algorithm? [closed]

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What is the error of this algorithm? [closed]

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#1 by (3 votes)
#2 by (2 votes)

1

I would like to see if you could help me find the error in this algorithm, the exercise says to calculate the discount: if m> = 300 the discount is 25% - if 150

c# c++ condiciones algoritmos

asked by Gustavo Torres 23.06.2017 в 18:34

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2 answers

2

It should be like this

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

int main () {
    int monto,desc1,calc1,desc2,calc2;

    printf("Ingrese el monto: ");
    scanf("%d",&monto);
    if (monto>300){
       calc1=monto*0.25;
       desc1=monto-calc1;
       printf("El descuento es de: %d $",calc1);
       printf("\nEL total a pagar es de: %d $",desc1);
    }
    else if ((monto<=150 && monto<300)){ 
       calc2=monto*0.2;
       desc2=monto-calc2;
       printf("El descuento es de: %d $",calc2);
       printf("\nEl total a pagar es de: %d $",desc2);
    }
    else (monto<150){
       printf("No hay descuento");
       printf("\nEl total a pagar es de: %d $",monto);
    }
}

answered by 23.06.2017 в 18:46

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score 3 · Accepted Answer

As I mentioned, the opening and closing keys of each block were missing, but you also had the second condition if ((monto<=150 && monto<300)) that I just corrected you wrong. Some comments.

C and C ++ do not initialize the values of the variables, so it is always a good practice to initialize them after declaring them: int monto=0,desc1=0,calc1=0,desc2=0,calc2=0;

I added a "cast" to int in the calculation of the discount: int (monto*0.25) to avoid warnings during the compilation and in passing I commented that you are losing the decimal part of the calculation when using int but I I imagine is what the exercise asks for.

As already commented @Trauma the final condition is unnecessary

The code:

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

int main () 
{
    int monto=0,desc1=0,calc1=0,desc2=0,calc2=0;

    printf("Ingrese el monto: ");
    scanf("%d",&monto);

    if (monto>300) {
        calc1=int (monto*0.25);
        desc1=monto-calc1;
        printf("El descuento es de: %d $",calc1);
        printf("\nEL total a pagar es de: %d $",desc1);
    }
    else if ((monto>=150 && monto<300)) {
         calc2=int (monto*0.2);
         desc2=monto-calc2;
         printf("El descuento es de: %d $",calc2);
         printf("\nEl total a pagar es de: %d $",desc2);
    } else {
        printf("No hay descuento");
        printf("\nEl total a pagar es de: %d $",monto);
    }
}