Hello Freinds
I have just started off with Unix (TCSH) although I have a pretty sound background with C-programming. Kindly convey any error in foll script.
#include<stdio.h>
#include<math.h>
#define PI 3.142857
main ()
{
float r, A;
printf("Enter the value of radius: ");
scanf(" %f ",&r);
A = ((PI/4)*r*r);
printf("Area of circle is %f", A);
}
I can compile it with gcc but when I run it in terminal, it returns nothing, guess it goes into a loop.
Pls help
Hm, sense of deja vu with this one.
Make r and A doubles.
The printf format "%f" actually works with doubles, not floats.
Things may have changed since my days at school, but I thought that area was
PI*r*r
Does it just hang?
thanx porter
but still not working, even wid doubles.
it just hangs. I have to Ctrl-Z i.e. suspend it.
just a thought
include<stdio.h>
include<math.h>
define PI 3.142857
main ()
{
float r, A;
printf("Enter the value of radius: ");
scanf(" %f ",&r);
A = (PI/4)*(r*r);
printf("Area of circle is %f", A);
}
but its in C, so # is necessary at d beginning.
Just not able to get it runnin. Grrrr.....
#include<stdio.h>
#include<math.h>
main ()
{
const float PI=3.142857;
double r, A;
A = (PI/4)*(r*r);
cout<<"Enter the value of radius: ";
cin>>r;
cout<<"Area of circle is "<< A;
}
This works on Solaris using gcc.
#include<stdio.h>
#include<math.h>
#define PI 3.142857
int main(int argc,char **argv)
{
float r, A;
printf("Enter the value of radius: ");
scanf("%f",&r);
A = ((PI/4)*r*r);
printf("Area of circle is %f", A);
return 0;
}
even if I don't agree with the actual algorithm.
Note I changed the scanf to be purely "%f".
all: area
area: area.c
$(CC) $(CFLAGS) -Wall -Werror area.c -o $@
EUREKA! THANX A LOT PORTER!
THOUGH I MIGHT NEED TO DELVE DEEPER INTO
'int main(int argc,char **argv)'
I SHALL READ ON IT FURTHER.
THANX AGAIN!
Hm, because earlier you said
I didnt know that my 'pretty sound' was not dat pretty....
Hi Mahendra,
The problem is that you should NOT put any space after the %f and before the "\) ur statement is like scanf\(" %f ", &r\); u put this line
scanf("%f",&r); it will work fine.
Thanks.
Krishna,
How this space in scanf matters? Any more inputs?
Hm, like I mentioned back then...
sscanf would other wise be looking for a space before the number hence why if you just type a number it appears to hang because you have not provided the space.