Adv C

Question: What will be output when you will execute following c code?
#include<stdio.h> int main(){ int a= sizeof(signed) +sizeof(unsigned); int b=sizeof(const)+sizeof(volatile); printf("%d",a+++b); return 0; }
Choose all that apply:
A
10

B
9

C
8

D
Error: Cannot find size of modifiers

E
Error: Undefined operator +++

Note: Turbo C++ 3.0: 8 Turbo C ++4.5: 8 Linux GCC: 16 Visual C++: 16 Default data type of signed, unsigned, const and volatile is int. In turbo c 3.0 size of int is two byte. So, a = 4 and b =4 Now, a+++b = a++ + b = 4 + 4 //due to post increment operator. =8 Note: In turbo c 4.5 and Linux gcc compiler size of int is 4 byte so your out will be 16
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Question: What will be output when you will execute following c code?
#include<stdio.h> int main(){ signed x,a; unsigned y,b; a=(signed)10u; b=(unsigned)-10; y = (signed)10u + (unsigned)-10; x = y; printf("%d %u\t",a,b); if(x==y) printf("%d %d",x,y); else if(x!=y) printf("%u %u",x,y); return 0; }
Choose all that apply:
A
10 -10 0 0

B
10 -10 65516 -10

C
10 -10 10 -10

D
10 65526 0 0

E
Compilation error

Note: Turbo C++ 3.0: 10 65526 0 0 Turbo C ++4.5: 10 65526 0 0 Linux GCC: 10 4294967286 0 0 Visual C++: 10 4294967286 0 0 a=(signed)10u; signed value of 10u is +10 so, a=10 b=(unsigned)-10; unsigned value of -10 is : MAX_VALUE_OF_UNSIGNED_INT – 10 + 1 In turbo c 3.0 compiler max value of unsigned int is 65535 So, b = 65526 y = (signed)10u + (unsigned)-10; = 10 + 65526 = 65536 = 0 (Since 65536 is beyond the range of unsigned int. zero is its corresponding cyclic vlaue) X = y = 0
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Question: What will be output of the following c program?
#include<stdio.h> int main(){ int goto=5; printf("%d",goto); return 0; }
A
5

B
10

C
20

D
Compilation error

E
None

Note: Invalid variable name. goto is keyword in c. variable name cannot be any keyword of c language.
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Question: What will be output of the following c program?
#include<stdio.h> int main(){ int ABC=10; printf("%d",abc); return 0; }
A
10

B
0

C
5

D
Compilation error

E
None

Note: Variable name is case sensitive.
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Question: What will be output of the following c program?
#include<stdio.h> int main(){ int printf=12; printf("%d",printf); return 0; }
A
12

B
0

C
5

D
Compilation error

E
None

Note: Variable name cannot be pre defined function of included header file.
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Question: What will be output of the following c program?
#include<stdio.h> int main(){ int EOF=12; printf("%d",EOF); return 0; }
A
12

B
0

C
5

D
Compilation error

E
None

Note: Variable name cannot be pre defined function of included header file.
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Question: What will be output when you will execute following c code?
#include<stdio.h> void main(){ int a=5,b=10,c=1; if(a&&b>c){ printf("cquestionbank"); } else{ break; } }
Choose all that apply:
A
cquestionbank

B
It will print nothing

C
Run time error

D
Compilation error

E
None

Note: Keyword break is not syntactical part of if-else statement. So we cannot use break keyword in if-else statement. This keyword can be use in case of loop or switch case statement. Hence when you will compile above code compiler will show an error message: Misplaced break.
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Question: What will be output when you will execute following c code?
#define PRINT printf("Star Wars");printf(" Psycho"); #include<stdio.h> void main(){ int x=1; if(x--) PRINT else printf("The Shawshank Redemption"); }
Choose all that apply:
A
Stars Wars Psycho

B
The Shawshank Redemption

C
Warning: Condition is always true

D
Warning: Condition is always false

E
Compilation error

Note: PRINT is macro constant. Macro PRINT will be replaced by its defined statement just before the actual compilation starts. Above code is converted as:
void main(){ int x=1; if(x--) printf("Star Wars"); printf(" Psycho"); else printf("The Shawshank Redemption"); }
If you are not using opening and closing curly bracket in if clause, then you can write only one statement in the if clause. So compiler will think: (i)
if(x--) printf("Star Wars");
It is if statement without any else. It is ok. (ii)
printf(" Psycho");
It is a function call. It is also ok (iii)
else printf("The Shawshank Redemption");
You cannot write else clause without any if clause. It is cause of compilation error. Hence compiler will show an error message: Misplaced else.
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Question: What will be output when you will execute following c code?
#define True 5==5 #include<stdio.h> void main(){ if(.001-0.1f) printf("David Beckham"); else if(True) printf("Ronaldinho"); else printf("Cristiano Ronaldo"); }
Choose all that apply:
A
David Beckham

B
Ronaldinho

C
Cristiano Ronaldo

D
Warning: Condition is always true

E
Warning: Unreachable code

Note: As we know in c zero represents false and any non-zero number represents true. So in the above code: (0.001 – 0.1f) is not zero so it represents true. So only if clause will execute and it will print: David Beckham on console. But it is bad programming practice to write constant as a condition in if clause. Hence compiler will show a warning message: Condition is always true Since condition is always true, so else clause will never execute. Program control cannot reach at else part. So compiler will show another warning message: Unreachable code
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Question: What will be output when you will execute following c code?
#include<stdio.h> void main(){ int a=100; if(a>10) printf("M.S. Dhoni"); else if(a>20) printf("M.E.K Hussey"); else if(a>30) printf("A.B. de villiers"); }
Choose all that apply:
A
M.S. Dhoni

B
A.B. de villiers

C
M.S Dhoni M.E.K Hussey A.B. de Villiers

D
Compilation error: More than one conditions are true

E
None

Note: In case of if – if else – if else … Statement if first if clause is true the compiler will never check rest of the if else clause and so on.
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Question: What will be output when you will execute following c code?
#include<stdio.h> int main(){ int a= sizeof(signed) +sizeof(unsigned); int b=sizeof(const)+sizeof(volatile); printf("%d",a+++b); return 0; }
Choose all that apply:

Question: What will be output of the following c program?
#include<stdio.h> int main(){ int goto=5; printf("%d",goto); return 0; }

Question: What will be output of the following c program?
#include<stdio.h> int main(){ int ABC=10; printf("%d",abc); return 0; }

Question: What will be output of the following c program?
#include<stdio.h> int main(){ int printf=12; printf("%d",printf); return 0; }

Question: What will be output of the following c program?
#include<stdio.h> int main(){ int EOF=12; printf("%d",EOF); return 0; }

Question: What will be output when you will execute following c code?
#include<stdio.h> void main(){ int a=5,b=10,c=1; if(a&&b>c){ printf("cquestionbank"); } else{ break; } }
Choose all that apply:

Question: What will be output when you will execute following c code?
#define PRINT printf("Star Wars");printf(" Psycho"); #include<stdio.h> void main(){ int x=1; if(x--) PRINT else printf("The Shawshank Redemption"); }
Choose all that apply:

Question: What will be output when you will execute following c code?
#define True 5==5 #include<stdio.h> void main(){ if(.001-0.1f) printf("David Beckham"); else if(True) printf("Ronaldinho"); else printf("Cristiano Ronaldo"); }
Choose all that apply:

Question: What will be output when you will execute following c code?
#include<stdio.h> void main(){ int a=100; if(a>10) printf("M.S. Dhoni"); else if(a>20) printf("M.E.K Hussey"); else if(a>30) printf("A.B. de villiers"); }
Choose all that apply:

Question: What will be output when you will execute following c code?#include<stdio.h> int main(){ int a= sizeof(signed) +sizeof(unsigned); int b=sizeof(const)+sizeof(volatile); printf("%d",a+++b); return 0; } Choose all that apply:

Question: What will be output of the following c program?#include<stdio.h> int main(){ int goto=5; printf("%d",goto); return 0; }

Question: What will be output of the following c program?#include<stdio.h> int main(){ int ABC=10; printf("%d",abc); return 0; }

Question: What will be output of the following c program?#include<stdio.h> int main(){ int printf=12; printf("%d",printf); return 0; }

Question: What will be output of the following c program?#include<stdio.h> int main(){ int EOF=12; printf("%d",EOF); return 0; }

Question: What will be output when you will execute following c code?#include<stdio.h> void main(){ int a=5,b=10,c=1; if(a&&b>c){ printf("cquestionbank"); } else{ break; } } Choose all that apply:

Question: What will be output when you will execute following c code?#define PRINT printf("Star Wars");printf(" Psycho"); #include<stdio.h> void main(){ int x=1; if(x--) PRINT else printf("The Shawshank Redemption"); } Choose all that apply:

Question: What will be output when you will execute following c code?#define True 5==5 #include<stdio.h> void main(){ if(.001-0.1f) printf("David Beckham"); else if(True) printf("Ronaldinho"); else printf("Cristiano Ronaldo"); } Choose all that apply:

Question: What will be output when you will execute following c code?#include<stdio.h> void main(){ int a=100; if(a>10) printf("M.S. Dhoni"); else if(a>20) printf("M.E.K Hussey"); else if(a>30) printf("A.B. de villiers"); } Choose all that apply:

Question: What will be output when you will execute following c code?
#include<stdio.h> int main(){ int a= sizeof(signed) +sizeof(unsigned); int b=sizeof(const)+sizeof(volatile); printf("%d",a+++b); return 0; }
Choose all that apply:

Question: What will be output of the following c program?
#include<stdio.h> int main(){ int goto=5; printf("%d",goto); return 0; }

Question: What will be output of the following c program?
#include<stdio.h> int main(){ int ABC=10; printf("%d",abc); return 0; }

Question: What will be output of the following c program?
#include<stdio.h> int main(){ int printf=12; printf("%d",printf); return 0; }

Question: What will be output of the following c program?
#include<stdio.h> int main(){ int EOF=12; printf("%d",EOF); return 0; }

Question: What will be output when you will execute following c code?
#include<stdio.h> void main(){ int a=5,b=10,c=1; if(a&&b>c){ printf("cquestionbank"); } else{ break; } }
Choose all that apply:

Question: What will be output when you will execute following c code?
#define PRINT printf("Star Wars");printf(" Psycho"); #include<stdio.h> void main(){ int x=1; if(x--) PRINT else printf("The Shawshank Redemption"); }
Choose all that apply:

Question: What will be output when you will execute following c code?
#define True 5==5 #include<stdio.h> void main(){ if(.001-0.1f) printf("David Beckham"); else if(True) printf("Ronaldinho"); else printf("Cristiano Ronaldo"); }
Choose all that apply:

Question: What will be output when you will execute following c code?
#include<stdio.h> void main(){ int a=100; if(a>10) printf("M.S. Dhoni"); else if(a>20) printf("M.E.K Hussey"); else if(a>30) printf("A.B. de villiers"); }
Choose all that apply: