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 5 of 8.

Elumalai said:   1 decade ago
Floor : It is used to eliminate the float(decimal)numbers that means if the value is 3.50 means the result is 3.00. It eliminate the .50.

Ceil : It is used to round the next integer value that means if the value is 3.50 or 3.4 the result is 4.

Round : It is used to round up or round down the float numbers based on the numbers. If the value is <3.5 then the result is 3 and >= 3.5 then v will get 4.

Alina said:   1 decade ago
ceil(1.44) = 1.00 and roundup(1.44) = 1.00 so both are same?

Cutie said:   1 decade ago
What is the difference between ceil & roundup and floor & roundto?

Sneha said:   1 decade ago
What the difference between roundup() and ceil()?

Anil Soni said:   1 decade ago
What is roundup() & why we use?

Shalini verma said:   1 decade ago
Give some examples of ceil() and floor() and roundup() and roundto().

Rambabu said:   1 decade ago
Friends ceil(1.00000001)==>2.0 and floor(1.99999999)==>1.0

And there are no functions like roundup and roundto.

I think it help's to you.

Shankar said:   1 decade ago
#include<stdio.h>
int main()
{

int x;
x=ceil(1.2) ;
printf("%f ",x);
printf("%f",ceil(1.2));
return 0;
}

Difference b/w two statement in this program.

1. x=ceil(1.2) ;
2. printf("%f",ceil(1.2));

Yogesh said:   1 decade ago
Here you are saying that for >. 5 then only the value will round to next highest integer but if we give as ceil (2.1) also we get ans as 3 then how?

Revathi said:   1 decade ago
Please tell me. We use roundto() instead of roundup(). Is it possible?


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