C Programming - Declarations and Initializations - Discussion

Discussion Forum : Declarations and Initializations - General Questions (Q.No. 5)
5.
How would you round off a value from 1.66 to 2.0?
ceil(1.66)
floor(1.66)
roundup(1.66)
roundto(1.66)
Answer: Option
Explanation:
/* Example for ceil() and floor() functions: */

#include<stdio.h>
#include<math.h>

int main()
{
    printf("\n Result : %f" , ceil(1.44) );
    printf("\n Result : %f" , ceil(1.66) );
 
    printf("\n Result : %f" , floor(1.44) );    
    printf("\n Result : %f" , floor(1.66) );

    return 0;
}
// Output:
// Result : 2.000000
// Result : 2.000000
// Result : 1.000000
// Result : 1.000000
Discussion:
79 comments Page 7 of 8.

Kmahender said:   1 decade ago
I want to know about different types of functions.

Anil Chauhan said:   10 years ago
#include <stdio.h>
#include <math.h>

int main ()
{
float val1, val2, val3, val4;

val1 = 1.6;
val2 = 1.2;
val3 = 2.8;
val4 = 2.3;

printf ("value1 = %.1lf\n", ceil(val1));
printf ("value2 = %.1lf\n", ceil(val2));
printf ("value3 = %.1lf\n", ceil(val3));
printf ("value4 = %.1lf\n", ceil(val4));

return(0);
}

RAJ said:   10 years ago
Why the output is 0 instead of having integer value 2?

#include<stdio.h>
#include<math.h>

int main()
{
printf("\n Result : %d" , ceil(1.44) );
printf("\n Result : %d" , ceil(1.66) );

printf("\n Result : %d" , floor(1.44) );
printf("\n Result : %d" , floor(1.66) );

return 0;

Prateek baranwal said:   10 years ago
I think this function is apply the numeric rule following. Ant this function we are use of manage of memory for managing bit or byte.

Stanly said:   9 years ago
@Raj.

You should use to print the float value by %f instead of %d.

Hameed said:   9 years ago
To round off 1.66 to 2.0.

#include<stdio.h>
#include<math.h>
int main()
{
printf("Result: %4.1f",ceil(1.66));
return 0;
}

Xyz said:   9 years ago
When we use roundup() and ceil() functions?

Sirisha said:   9 years ago
What is the difference between roundup() & ceil()?

Abdulrahman said:   9 years ago
There is not standard function for rounding in c called roundup().

Shivkumar said:   8 years ago
What is difference between ceil() and floor() funtion?


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