C Program-Error

[senewimala1988]

Meka mama study karana book eke thibba example ekak functions valata..Eth meka compile karanna be errors enava...Mata meke errors tika monaada kiyala kiyanavaada....???
I dont know C programming well....

#include<stdio.h>
#define pi 3.141

void area(int r);
void area(float r);

int main()
{
int radius;
printf("Enter the radius: ");
scanf("%d",&radius);

area(radius);
area((float)radius);

return 0;
}

void area(int r)
{
printf("\nInteger input");
printf("\nArea is: %.2f\n",(pi*r*r));
}
void area(float r)
{
printf("\nFloating point input");
printf("\nArea is: %.2f\n",(pi*r*r));
}

 

[kosandpol]

there already is a function named area() so it conflicts with the one you're defining here. Rename your function to something else and try to compile again

 

[lankanatha]

Meka mama study karana book eke thibba example ekak functions valata..Eth meka compile karanna be errors enava...Mata meke errors tika monaada kiyala kiyanavaada....???
I dont know C programming well....

#include<stdio.h>
#define pi 3.141

void areai(int r);
void areaf(float r);

int main()
{
int radius;
printf("Enter the radius: ");
scanf("%d",&radius);

areai(radius);
areaf((float)radius);

return 0;
}

void areai(int r)
{
printf("\nInteger input");
printf("\nArea is: %.2f\n",(pi*r*r));
}
void areaf(float r)
{
printf("\nFloating point input");
printf("\nArea is: %.2f\n",(pi*r*r));
}

mehema karala balanna. oya koheda c igena ganne, potha mokakda?

 

[senewimala1988]

Mage note eke thiyenne mehema...

It is also possible to define several functions with the same name but with different parameters.
As given below..

float area(int r);
float area(float r);

Both these functions calculate the area of a circle given radius. However the first function accepts an integer as the input while the second function accepts a floating point number. based on the type of the given input the program dynamically calls the correct function.

 

[nagaya]

machan area() kiyalama function 2k thiyenwane..ekaka area1 karapn
GCC ta witharak newe matath pshyco gahanwa ohoma thibbama

 

[nagaya]

Mage note eke thiyenne mehema...

It is also possible to define several functions with the same name but with different parameters.
As given below..

float area(int r);
float area(float r);

It is also impossible to define several functions with the same name but with different parameters.
As given below..

mehema wenna athi bn

 

[silence]

What you're trying to do is overload the function 'area'... problem is "pure C" doesn't allow function overloading.

How ever C++ does... so does the g++ compiler. So instead of using gcc, use g++ to compile this, it should work right out.

 

[senewimala1988]

mehema karala balanna. oya koheda c igena ganne, potha mokakda?

mama Uni of Moratuwa....Eng Fac eke...Eke note eke thiyenne...mama note eke kellak post kala...

 

[senewimala1988]

It is also impossible to define several functions with the same name but with different parameters.
As given below..

mehema wenna athi bn

Apo ne ban...Mama first post eke daala thiyenne note eke okata adaala coding tika....Oke out put eka deela thiyenne as beelow.

Enter radius: 1

Integer input
Area is: 3.14
Floating point input
Area is: 3.14

 

[silence]

It is also impossible to define several functions with the same name but with different parameters.
As given below..

mehema wenna athi bn

Umm.. no, it's called function overloading. 'pure C' does not support it, but since the C99 spec it's been included, and almost all the other languages support it including C++/Java/etc

 

[nagaya]

Umm.. no, it's called function overloading. 'pure C' does not support it, but since the C99 spec it's been included, and almost all the other languages support it including C++/Java/etc

but he's using pure C here as he uses gcc to compile
so that note should be revised as i guess

 

[senewimala1988]

but he's using pure C here as he uses gcc to compile
so that note should be revised as i guess

Ane mama danne ne banz..
Mata mehema avulak vechcha first velaava..(kalin avulak lihaa ganna oyath help kala)
next week eke functions valin practical ekak..

 

[kosandpol]

Mage note eke thiyenne mehema...

It is also possible to define several functions with the same name but with different parameters.
As given below..

float area(int r);
float area(float r);

Both these functions calculate the area of a circle given radius. However the first function accepts an integer as the input while the second function accepts a floating point number. based on the type of the given input the program dynamically calls the correct function.

I think your notes are missing an important bit of information. That this applies only to Microsoft C.
see : http://en.wikipedia.org/wiki/Name_mangling#C_name_decoration_in_Microsoft_Windows

 

[senewimala1988]

I think your notes are missing an important bit of information. That this applies only to Microsoft C.
see : http://en.wikipedia.org/wiki/Name_mangling#C_name_decoration_in_Microsoft_Windows

Ane ban mama C valata aluth..Ovva therenne ne...Kalin program tika kara gaththe ElaKiri eke pihiten thama...mata tikak sinhalen kiyanavaada...Nathnam okkoma avul venava banz...Sorry!!!

 

[kosandpol]

Ane ban mama C valata aluth..Ovva therenne ne...Kalin program tika kara gaththe ElaKiri eke pihiten thama...mata tikak sinhalen kiyanavaada...Nathnam okkoma avul venava banz...Sorry!!!

Microsoft's version of C has 'the same function with different parameters' feature.
Not GNU C.
So your notes are only for MS C.

 

[senewimala1988]

Microsoft's version of C has 'the same function with different parameters' feature.
Not GNU C.
So your notes are only for MS C.

Ethakota ban C programmin languages keepayak thiyenavaada???
api C karanne Redhat vala...eke wada karanavaada???
Mokakda ban GNU kiyana eke meaning eka???

 

[kosandpol]

Ethakota ban C programmin languages keepayak thiyenavaada???
api C karanne Redhat vala...eke wada karanavaada???

most probably. instead of ubuntu, use RedHat or CentOS to try your C lessions.
There's a lot of C versions. didnt they teach you the history of C ? or were you asleep during that bit of the lecture ?

 

[senewimala1988]

most probably. instead of ubuntu, use RedHat or CentOS to try your C lessions.
There's a lot of C versions. didnt they teach you the history of C ? or were you asleep during that bit of the lecture ?

Ohoma ahanna epa banz...
Mama lectures giye eka 3 paarak withara wage...Sometimes eeta kalin thiyena practical eka ivara venna godak wela yanava...Ethkotath yanna bari wenawa...
anika lecturer hoda nida gannama thama...ekkenek enava...Eya nam charrrr...


Mokakda ubuntu vala thiyena avula???
mata therenne ne...Fedora valata hariyaida???
Ubuntu valata solution ekak aththema nadda???

 

[visuddha]

why don't you declare the functions in this manner

void area(int);
void area(float);

it will work!

 

[senewimala1988]

most probably. instead of ubuntu, use RedHat or CentOS to try your C lessions.
There's a lot of C versions. didnt they teach you the history of C ? or were you asleep during that bit of the lecture ?

Mama turbo C++ use kala windows compiler ekak viddihata..Eketh error ekak enavane banz???