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Floating Point Issues Online Exam Quiz

Important questions about Floating Point Issues. Floating Point Issues MCQ questions with answers. Floating Point Issues exam questions and answers for students and interviews.

1. What will be the output of the program? #include<stdio.h> int main() { float d=2.25; printf("%e,", d); printf("%f,", d); printf("%g,", d); printf("%lf", d); return 0; }

Options

A : 2.2, 2.50, 2.50, 2.5

B : 2.2e, 2.25f, 2.00, 2.25

C : 2.250000e+000, 2.250000, 2.25, 2.250000

D : Error

2. What will be the output of the program? #include<stdio.h> int main() { float *p; printf("%d\n", sizeof(p)); return 0; }

Options

A : 2 in 16bit compiler, 4 in 32bit compiler

B : 4 in 16bit compiler, 2 in 32bit compiler

C : 4 in 16bit compiler, 4 in 32bit compiler

D : 2 in 16bit compiler, 2 in 32bit compiler

3. What will be the output of the program? #include<stdio.h> int main() { float a=0.7; if(a < 0.7f) printf("C\n"); else printf("C++\n"); return 0; }

Options

A : C

B : C++

C : Compiler error

D : Non of above

4. What will be the output of the program? #include<stdio.h> int main() { float a=0.7; if(a < 0.7) printf("C\n"); else printf("C++\n"); return 0; }

Options

A : C

B : C++

C : Compiler error

D : Non of above

5. What will be the output of the program? #include<stdio.h> #include<math.h> int main() { printf("%f\n", sqrt(36.0)); return 0; }

Options

A : 6.0

B : 6

C : 6.000000

D : Error: Prototype sqrt() not found.

6. What will be the output of the program? #include<stdio.h> #include<math.h> int main() { printf("%d, %d, %d\n", sizeof(3.14f), sizeof(3.14), sizeof(3.14l)); return 0; }

Options

A : 4, 4, 4

B : 4, 8, 8

C : 4, 8, 10

D : 4, 8, 12

7. What will be the output of the program? #include<stdio.h> #include<math.h> int main() { float n=1.54; printf("%f, %f\n", ceil(n), floor(n)); return 0; }

Options

A : 2.000000, 1.000000

B : 1.500000, 1.500000

C : 1.550000, 2.000000

D : 1.000000, 2.000000

8. What will be the output of the program? #include<stdio.h> int main() { float f=43.20; printf("%e, ", f); printf("%f, ", f); printf("%g", f); return 0; }

Options

A : 4.320000e +01 , 43.200001, 43.2

B : 4.3, 43.22, 43.21

C : 4.3e, 43.20f, 43.00

D : Error

9. What will be the output of the program? #include<stdio.h> int main() { float fval=7.29; printf("%d\n", (int)fval); return 0; }

Options

A : 0

B : 0.0

C : 7.0

D : 7

1. If the binary eauivalent of 5.375 in normalised form is 0100 0000 1010 1100 0000 0000 0000 0000, what will be the output of the program (on intel machine)? #include<stdio.h> #include<math.h> int main() { float a=5.375; char *p; int i; p = (char*)&a; for(i=0; i<=3; i++) printf("%02x\n", (unsigned char)p[i]); return 0; }

Options

A : 40 AC 00 00

B : 04 CA 00 00

C : 00 00 AC 40

D : 00 00 CA 04

2. What will you do to treat the constant 3.14 as a long double ?

Options

A : use 3.14LD

B : use 3.14L

C : use 3.14DL

D : use 3.14LF

3. What will you do to treat the constant 3.14 as a float ?

Options

A : use float(3.14f)

B : use 3.14f

C : use f(3.14)

D : use (f)(3.14)

4. The binary equivalent of 5.375 is

Options

A : 101.101110111

B : 101.011

C : 101011

D : None of above

5. We want to round off x , a float , to an int value, The correct way to do is

Options

A : y = (int)(x + 0.5)

B : y = int(x + 0.5)

C : y = (int)x + 0.5

D : y = (int)((int)x + 0.5)

6. Which of the following statement obtains the remainder on dividing 5.5 by 1.3?

Options

A : rem = (5.5 % 1.3)

B : rem = modf(5.5, 1.3)

C : rem = fmod(5.5, 1.3)

D : Error: we can't divide

7. Which of the following range is a valid long double (Turbo C in 16 bit DOS OS)?

Options

A : 3.4E -4932 to 1.1E +4932

B : 3.4E -4932 to 3.4E +4932

C : 1.1E -4932 to 1.1E +4932

D : 1.7E -4932 to 1.7E +4932

8. A float occupies 4 bytes. If the hexadecimal equivalent of these 4 bytes are A, B, C and D, then when this float is stored in memory in which of the following order do these bytes gets stored?

Options

A : ABCD

B : DCBA

C : 0xABCD

D : Depends on big endian or little endian architecture

10. What are the different types of real data type in C?

Options

A : float, double

B : short int, double, long int

C : float, double, long double

D : double, long int, float

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