simple interest using functions.

[priyanshm]

i was trying to make a program of calculating simple intrest using functions.

i dont know whats wrong with the program but it always shows a wrong output.

#include<iostream.h>
#include<conio.h>
float si(int p,int r,int t)
{
return ((p*t*r)/100.0);
}
void main()
{
clrscr();
int p,t;
float s,r;
cout<<"enter p,r,t";
cin>>p>>r>>t;
s=si(p,r,t);
cout<<s;
getch();
}

Please help.

[o3hC5Di1]

Hi there,

Could you please be a little more specific?
Which output do you expect with which input, and what output is it giving you instead?

All the best,
NwN

[ajh32]

Maybe he's expecting the result to a specific number of decimal places? In which case look at sprintf and the format options... But agreed would be handy to know what the expected output for a given input is.

[priyanshm]

@NwN: any input, i take, it gives me a wrong output.

For eg:
If I take p=10000
r=10
t=1
then it gives me an output of -310.73, whereas the output should be 1000.

[o3hC5Di1]

Hi there,

Try using a debug-cout statement as such:

float si(int p,int r,int t)
{
   std::cout << "p = " << p << "\nr = " << r << "\nt = " << t << std::endl;
   return ((p*t*r)/100.0);
}

If the valuesthere are incorrect, there may be a problem with how you write them in.
You are not separating the p r and t with comma's when you input them into the program are you?
It will only work using spaces, unless you do:

char c;
std::cin << p << c << r << c << t;

All the best,
NwN