What's wrong with my programme??

bananarama22

forget about the calculations, the top part of the program is fine and working well, I just want the the computer to return a value for e that it calcualtes:

Cheers

#include<stdio.h>
main()
{
int(a);
printf("how many drinks have you consumed");
scanf("%lf",&a);
int(b);
printf("what was the volume of these beverages");
scanf("%lf",&b);
int(c);
printf("what was the percentage of these beverages");
scanf("%lf",&c);
int(d);
d==a*b*c*0.01;
scanf("%lf",&d);
int(e);
e==((d/5000)*100);
scanf("%lf",&e);
printf("%lf",&e);
system("pause");
return(0);
}

Gone Drinking

An app to work out if you're over the limit..

HELLO DRAGONS DEN!!1

:pac:

JonathanAnon

It's a while since I've done C programming, but those declarations look different to what I used to use... was more like

int a;

from what I remember.. What error are you getting.

maki

Your syntax is a bit wonky. You only need to have one equals in the places where you have two.

MiCr0

this looks a lot like homework

bananarama22

MiCr0 wrote: »

this looks a lot like homework

seriosuly isn't, I'm a chem student, just trying C programming for the craic

ok, I got rid of the double = and replaced it with a single.

Not getting particular error message, cmd comes upp and the messages, like how much have you drunk, volume, percentage etc, when I type in the last parameter, the cmd just stays blank

maki

bananarama22 wrote: »

seriosuly isn't, I'm a chem student, just trying C programming for the craic

ok, I got rid of the double = and replaced it with a single.

Not getting particular error message, cmd comes upp and the messages, like how much have you drunk, volume, percentage etc, when I type in the last parameter, the cmd just stays blank

That's because the program is waiting on you to input something for the variables d and e.
Get rid of the scanf lines for d and e, and delete the ampersand in the final printf.

Also, system("pause") probably won't work unless you #include <stdlib.h>
You should probably use floats instead of integers since you're doing so much dividing. Scanf is expecting a float each time anyway since you're using &lf

bananarama22

maki wrote: »

That's because the program is waiting on you to input something for the variables d and e.
Get rid of the scanf lines for d and e, and delete the ampersand in the final printf.

Also, system("pause") probably won't work unless you #include <stdlib.h>
You should probably use floats instead of integers since you're doing so much dividing. Scanf is expecting a float each time anyway since you're using &lf

Cheers bud, Works like a charm now

this isn't part of your proffession by any chance is it??

yoyo

Moved to development

longhalloween

I'm not exactly sure what you're trying to calculate but here's my attempt to make it work.

#include <stdio.h>

main(){

int a;
float b,c,d,e;

printf("how many drinks have you consumed\n");
scanf("%d",&a);

printf("what was the volume of these beverages\n");
scanf("%f",&b);

printf("what was the percentage of these beverages\n");
scanf("%f",&c);

d = a*b*c*0.01;
e =(d/5000)*100;

printf("%f\n",e);
system("pause");
return(0);
}

bananarama22

Thanks everyone, I got it working How do I close this thead now ??

Genghiz Cohen

bananarama22 wrote: »

Thanks everyone, I got it working How do I close this thead now ??

return;

whitesands

OP's question answered so I have to ask.

Gone Drinking wrote: »

An app to work out if you're over the limit..

HELLO DRAGONS DEN!!1

:pac:

Seriously??? Someone went on Dragons Den with a similar app