C Programming - Declarations and Initializations - Discussion
Discussion Forum : Declarations and Initializations - General Questions (Q.No. 1)
1.
Which of the following statements should be used to obtain a remainder after dividing 3.14 by 2.1 ?
Answer: Option
Explanation:
fmod(x,y) - Calculates x modulo y, the remainder of x/y.
This function is the same as the modulus operator. But fmod() performs floating point divisions.
Example:
#include <stdio.h>
#include <math.h>
int main ()
{
printf ("fmod of 3.14/2.1 is %lf\n", fmod (3.14,2.1) );
return 0;
}
Output:
fmod of 3.14/2.1 is 1.040000
Discussion:
141 comments Page 5 of 15.
Sreedhar said:
1 decade ago
Hi friends, please help me how give below program output -80 ?
#include<stdio.h>
#define ABC 20
#define XYZ 10
#define XXX ABC - XYZ
void main()
{
int a;
a = XXX * 10;
printf("%d\n", a);
}
#include<stdio.h>
#define ABC 20
#define XYZ 10
#define XXX ABC - XYZ
void main()
{
int a;
a = XXX * 10;
printf("%d\n", a);
}
Sundar said:
1 decade ago
@Sreedhar
Step by step process:
a = XXX * 10
a = ABC - XYZ * 10
a = 20 - 10* 10
a = 20 - 100
a = -80
Step by step process:
a = XXX * 10
a = ABC - XYZ * 10
a = 20 - 10* 10
a = 20 - 100
a = -80
Amar said:
1 decade ago
Thanks for your suggestions.
Krishna said:
1 decade ago
modf(x, y) is used to split the float point in to the intpart and factpart.
Ex: 3.13=3.00+0.13
fmod(x,y) is used to find the remainder in floating points.
Ex: fmod(3.14,2.1)
Ex: 3.13=3.00+0.13
fmod(x,y) is used to find the remainder in floating points.
Ex: fmod(3.14,2.1)
Bharadwaj said:
1 decade ago
Please clarify my doubt.
What is the meaning of "External declaration and Where is use" ?
What is the meaning of "External declaration and Where is use" ?
Manoj kumar said:
1 decade ago
External declaration means Declaring any variable before main() function or after main() function but not in main() function.
Example :
#include<stdio.h>
int S_no ;
main()
{
S_no=10;
printf ("%d\n",S_no);
}
Here I declared S_no Externally
Example :
#include<stdio.h>
int S_no ;
main()
{
S_no=10;
printf ("%d\n",S_no);
}
Here I declared S_no Externally
Jagadeesh kumar said:
1 decade ago
It's nothing but difference between numerator and denominator.
Vinod kumar said:
1 decade ago
fmod(x,y) is floating point remainder of x/y,with the same sign as x.If y=0 ,the result is implementation-defined
e.g.
#include <stdio.h>
#include <math.h>
int main ()
{
printf ("fmod of 3.14/2.1 is %lf\n", fmod (3.14,2.1) );
return 0;
}
ans output:fmod of 3.14/2.1 is 1.040000
e.g.
#include <stdio.h>
#include <math.h>
int main ()
{
printf ("fmod of 3.14/2.1 is %lf\n", fmod (3.14,2.1) );
return 0;
}
ans output:fmod of 3.14/2.1 is 1.040000
Pooja Papule said:
1 decade ago
But % operator also gives remainder in output.... So, we can also use %....
Manikandan said:
1 decade ago
What is the differnce b/w fmod and modf ?
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