Adv C

Question: Which of the following is integral data type?
A
void

B
char

C
float

D
double

E
None of these

Note: In c char is integral data type. It stores the ASCII value of any character constant.
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Question: What will be output when you will execute following c code?
#include<stdio.h> int main(){ volatile int a=11; printf("%d",a); return 0; }
A
11

B
Garbage

C
-2

D
We cannot predict

E
Compilation error

Note: We cannot predict the value of volatile variable because its value can be changed by any microprocessor interrupt.
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Question: What is the range of signed int data type in that compiler in which size of int is two byte?
A
-255 to 255

B
-32767 to 32767

C
-32768 to 32768

D
-32767 to 32768

E
-32768 to 32767

Note: Note: Size of int is always equal to word length of micro preprocessor in which your compiler has based.
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Question: What will be output when you will execute following c code?
#include<stdio.h> const enum Alpha{ X, Y=5, Z }p=10; int main(){ enum Alpha a,b; a= X; b= Z; printf("%d",a+b-p); return 0; }
A
-4

B
-5

C
10

D
11

E
Error: Cannot modify constant object

Note: Default value of enum constant X is zero and Z = Y + 1 = 5 + 1 = 6 So, a + b – p =0 + 6 -10 = -4
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Question: What will be output when you will execute following c code?
#include<stdio.h> int main(){ char a=250; int expr; expr= a+ !a + ~a + ++a; printf("%d",expr); return 0; }
A
249

B
250

C
0

D
-6

E
Compilation error

Note: char a = 250; 250 is beyond the range of signed char. Its corresponding cyclic value is: -6 So, a = -6 Consider on the expression: expr= a+ !a + ~a + ++a; Operator! , ~ and ++ have equal precedence. And it associative is right to left. So, First ++ operator will perform the operation. So value a will -5 Now, Expr = -5 + !-5 + ~-5 + -5 = -5 + !-5 + 4 - 5 = -5 + 0 + 4 -5 = -6
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Question: Consider on order of modifiers in following declaration: (i)char volatile register unsigned c; (ii)volatile register unsigned char c; (iii)register volatile unsigned char c; (iv)unsigned char volatile register c;
A
Only (ii) is correct declaration

B
Only (i) is correction declaration

C
All are incorrect

D
All are correct but they are different

E
All are correct and same

Note: Order of modifier of variable in c has not any significant.
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Question: What will be output when you will execute following c code?
#include<stdio.h> int main(){ int a=-5; unsigned int b=-5u; if(a==b) printf("Avatar"); else printf("Alien"); return 0; }
A
Avatar

B
Alien

C
Run time error

D
Error: Illegal assignment

E
Error: Don’t compare signed no. with unsigned no.

Note: int a=-5; Here variable a is by default signed int. unsigned int b=-5u; Constant -5u will convert into unsigned int. Its corresponding unsigned int value will be : 65536 – 5 + 1= 65532 So, b = 65532 In any binary operation of dissimilar data type for example: a == b Lower data type operand always automatically type casted into the operand of higher data type before performing the operation and result will be higher data type. In c signed int is higher data type than unsigned int. So variable b will automatically type casted into signed int. So corresponding signed value of 65532 is -5 Hence, a==b
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Question: What will be output when you will execute following c code?
#include<stdio.h> extern enum cricket x; int main(){ printf("%d",x); return 0; } const enum cricket{ Taylor, Kallis=17, Chanderpaul }x=Taylor|Kallis&Chanderpaul;
A
0

B
15

C
16

D
17

E
Compilation error

Note: Turbo C++ 3.0: 16 Turbo C ++4.5: Compilation error Linux GCC: Compilation error Visual C++: 16 x=Taylor|Kallis&Chanderpaul = 0 | 17 & 18 = 0 |(17 & 18) //& operator enjoy higher precedence than | =0 |16 =16
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Question: Which of the following is not derived data type in c?
A
Function

B
Pointer

C
Enumeration

D
Array

E
All are derived data type

Note: Enum is primitive data type.
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Question: What will be output when you will execute following c code?
#include<stdio.h> enum A{ x,y=5, enum B{ p=10,q }varp; }varx; int main(){ printf("%d %d",x,varp.q); return 0; }
A
0 11

B
5 10

C
4 11

D
0 10

E
Compilation error

Note: Nesting of enum constant is not possible in c.
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Question: Which of the following is integral data type?

Question: What will be output when you will execute following c code?
#include<stdio.h> int main(){ volatile int a=11; printf("%d",a); return 0; }

Question: What is the range of signed int data type in that compiler in which size of int is two byte?

Question: What will be output when you will execute following c code?
#include<stdio.h> const enum Alpha{ X, Y=5, Z }p=10; int main(){ enum Alpha a,b; a= X; b= Z; printf("%d",a+b-p); return 0; }

Question: What will be output when you will execute following c code?
#include<stdio.h> int main(){ char a=250; int expr; expr= a+ !a + ~a + ++a; printf("%d",expr); return 0; }

Question: Consider on order of modifiers in following declaration: (i)char volatile register unsigned c; (ii)volatile register unsigned char c; (iii)register volatile unsigned char c; (iv)unsigned char volatile register c;

Question: What will be output when you will execute following c code?
#include<stdio.h> int main(){ int a=-5; unsigned int b=-5u; if(a==b) printf("Avatar"); else printf("Alien"); return 0; }

Question: What will be output when you will execute following c code?
#include<stdio.h> extern enum cricket x; int main(){ printf("%d",x); return 0; } const enum cricket{ Taylor, Kallis=17, Chanderpaul }x=Taylor|Kallis&Chanderpaul;

Question: Which of the following is not derived data type in c?

Question: What will be output when you will execute following c code?
#include<stdio.h> enum A{ x,y=5, enum B{ p=10,q }varp; }varx; int main(){ printf("%d %d",x,varp.q); return 0; }

Question: Which of the following is integral data type?

Question: What will be output when you will execute following c code?#include<stdio.h> int main(){ volatile int a=11; printf("%d",a); return 0; }

Question: What is the range of signed int data type in that compiler in which size of int is two byte?

Question: What will be output when you will execute following c code?#include<stdio.h> const enum Alpha{ X, Y=5, Z }p=10; int main(){ enum Alpha a,b; a= X; b= Z; printf("%d",a+b-p); return 0; }

Question: What will be output when you will execute following c code?#include<stdio.h> int main(){ char a=250; int expr; expr= a+ !a + ~a + ++a; printf("%d",expr); return 0; }

Question: Consider on order of modifiers in following declaration: (i)char volatile register unsigned c; (ii)volatile register unsigned char c; (iii)register volatile unsigned char c; (iv)unsigned char volatile register c;

Question: What will be output when you will execute following c code?#include<stdio.h> int main(){ int a=-5; unsigned int b=-5u; if(a==b) printf("Avatar"); else printf("Alien"); return 0; }

Question: What will be output when you will execute following c code?#include<stdio.h> extern enum cricket x; int main(){ printf("%d",x); return 0; } const enum cricket{ Taylor, Kallis=17, Chanderpaul }x=Taylor|Kallis&Chanderpaul;

Question: Which of the following is not derived data type in c?

Question: What will be output when you will execute following c code?#include<stdio.h> enum A{ x,y=5, enum B{ p=10,q }varp; }varx; int main(){ printf("%d %d",x,varp.q); return 0; }

Question: What will be output when you will execute following c code?
#include<stdio.h> int main(){ volatile int a=11; printf("%d",a); return 0; }

Question: What will be output when you will execute following c code?
#include<stdio.h> const enum Alpha{ X, Y=5, Z }p=10; int main(){ enum Alpha a,b; a= X; b= Z; printf("%d",a+b-p); return 0; }

Question: What will be output when you will execute following c code?
#include<stdio.h> int main(){ char a=250; int expr; expr= a+ !a + ~a + ++a; printf("%d",expr); return 0; }

Question: What will be output when you will execute following c code?
#include<stdio.h> int main(){ int a=-5; unsigned int b=-5u; if(a==b) printf("Avatar"); else printf("Alien"); return 0; }

Question: What will be output when you will execute following c code?
#include<stdio.h> extern enum cricket x; int main(){ printf("%d",x); return 0; } const enum cricket{ Taylor, Kallis=17, Chanderpaul }x=Taylor|Kallis&Chanderpaul;

Question: What will be output when you will execute following c code?
#include<stdio.h> enum A{ x,y=5, enum B{ p=10,q }varp; }varx; int main(){ printf("%d %d",x,varp.q); return 0; }