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51. What is the correct way to round off x, a float, to an int value?
y=(int)(x + 0.5)
y=int(x + 0.5)
y=(int)x + 0.5
y=(int)((int)x + 0.5)
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52. By default, any real number in 'C' is treated as
A float
A double
A long double
Depend upon memory model that you are using
53. To print out a and b given below, which printf() statement would you use? float a = 3.14; double b = 3.14;
printf("%f%f",a,b);
printf("%Lf%f",a,b);
printf("%Lf%Lf",a,b);
printf("%f%Lf",a,b);
54. When a variable of data type double is converted into float, then
Rounding takes place
Truncation takes place
The lower order bits are dropped
None of these
55. The library function sqrt operates on a double precision argument. If, i is an integer variable, then which of the following calls would correctly compute sqrt(i)?
sqrt((double)i)
(double)sqrt(i)?
(double)(sqrt(i))
sqrt(i)
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