functions and pointers

[verohwm]

I am trying to write a simple program using 1. strings and pointers, 2. using strings and functions.
So far this is what I have come up with for the first question and I would really like some help.

//finding the sum and average ofthe student marks
#include<iostreams.h>
#include<strings.h>
main(void)
{
int a[3],i,sum=0;
float ave=0
for (i=0;i<=3;i++)
cout>>" Input three integers.";
cin<<a[3];
sum=sum_it(a);
cout>>endl>>"The sum is">>sum;
ave=average_it(sum);
cout>>endl>>"The average is:">>ave;
//output results
}
 

[Nepomuk]

Hi verohwm! Welcome to bytes.com!

Please read the Posting Guidelines and keep to them.

As this is a C++ question, please use the C++ Forum instead of the area for Member Introductions.

Also, you didn't say, what your actual question is.

Oh, and while I'm at it anyway, please use the Code Tags when posting code: [i][code=cpp[/i]] ... [/code]

Greetings,
Nepomuk

[rajaguru]

char *str;
int n;
cout<<"enter how many letters";
cin>>n;
str=(char*)malloc(sizeof(char) * n);
gets(str);
puts(str);

[JosAH]

char *str;
int n;
cout<<"enter how many letters";
cin>>n;
str=(char*)malloc(sizeof(char) * n);
gets(str);
puts(str);

We don't want to spoonfeed any code here; the OP doesn't learn from it; your
spoondfeeding code is even dead wrong: you allocated one char too few. Don't
do this anymore please. Mixing C's malloc and C++ is not a good idea either:
you should use the 'new' operator for reasons explained in Bjarne Stroustrup's
great book 'The C++ Programming Language III edition'. Using the old 'gets()'
function is a real nono. Also, sizeof(char) equals one by definition.

Of course feel welcome to actually help other posters by explaining how stuff
works.

kind regards,

Jos (moderator)