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What is the correct answer?

4

What will be output if you will compile and execute the following c code?


#include 
int main(){
char c=125;
c=c+10;
printf("%d",c);
return 0;
}

 

A. 135

B. +INF

C. -121

D. -135

Correct Answer :

C. -121


As we know char data type shows cyclic properties i.e. if you will increase or decrease the char variables beyond its maximum or minimum value respectively it will repeat same value according to following cyclic order:
char


So, 


125+1= 126
125+2= 127
125+3=-128
125+4=-127
125+5=-126
125+6=-125
125+7=-124
125+8=-123
125+9=-122
125+10=-121

Related Questions

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4

The output of the following code is:
void main() 
{
float a;
int x = 10, y = 3; a = x / y;
printf("%f", a); }

A. 3.999999

B. Error

C. 3

D. 3.000000

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4

printf() is not a library function.

A. True

B. False

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4

Which escape character can be used to beep from speaker in C?

A. \a

B. \b

C. \m

D.

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4

The -------------------------- loop executes at least once.

A. for

B. while

C. do-while

D. while & do-while

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4

C programming language was developed by

A. Dennis Ritchie

B. Ken Thompson

C. Bill Gates

D. Peter Norton

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4

The value of an enumerated datatype can be read using scanf() function.

A. True

B. False

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4

perror( ) function used to ?

A. Work same as printf()

B. prints the error message specified by the compiler

C. prints the garbage value assigned by the compiler

D. None of the above

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4

The output of the following code is:
main() 
{
int k, num = 30;
k = (num > 5 ? (num <= 10 ? 100 : 200) : 500);
printf("
%d", num);
}

A. 200

B. 500

C. 30

D. Unpredictable

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4

Expression 4**3 evaluates to 64.

A. True

B. False

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4

The expression 'int j = 6 + 3 % -9;' evaluates to -1.

A. True

B. False

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4

A declaration float a, b; occupies ___ of memory

A. 1 byte

B. 4 bytes

C. 8 bytes

D. 16 bytes

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4

&& and & operators have the same meaning.

A. True

B. False

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4

Nested macros are allowed.

A. True

B. False

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4

Which header file is essential for using strcmp() function?

A. string.h

B. strings.h

C. text.h

D. strcmp.h

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4

All macro substitutions in a program are done before compilation of the program.

A. True

B. False

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4

Which of the STL containers store the elements contiguously (in adjecent memory locations)?

A. std::vector

B. std::list

C. std::map

D. std::set

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4

Which among the following is a unconditional control structure

A. do-while

B. if-else

C. goto

D. for

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4

gets() and puts() are unformatted I/O functions.

A. True

B. False

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4

An array declared as A[100][100] can hold a maximum of 100 elements.

A. True

B. False

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4

Every if statement can be converted into an equivalent switch statement.

A. True

B. False

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4

The contents of a file opened in 'r+' mode cannot be changed.

A. True

B. False

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4

Which of the following is a valid destructor of the class name "Country"

A. int ~Country()

B. void Country()

C. int ~Country(Country obj)

D. void ~Country()

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4

What is the difference between overloaded functions and overridden functions?

A. Overloading is a dynamic or run-time binding and Overriding is static or compile-time binding

B. Redefining a function in a friend class is called function overriding while Redefining a function in a derived class is called a overloaded fucntion.

C. Overloading is a static or compile-time binding and Overriding is dynamic or run-time binding

D. Redefining a function in a friend class is called function overloading while Redefining a function in a derived class is called as overridden fucnion.

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4

p++ executes faster than p + 1.

A. True

B. False

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4

A multidimensional array A[10][9] can store-------- number of elements

A. 91

B. 88

C. 90

D. 89

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4

Which options shows the correct hierarchy of arithmetic operators

A. **, * or /, + or -

B. **, *, /, +, -

C. **< /< *< +<-

D. / or *, - or +

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4

Only one break can be used in one loop.

A. True

B. False

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4

Which of the following shows the correct hierarchy of arithmetic operations in C

A. / + *

B. * / +

C. + / *

D. * / + -

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4

What is Keywords?

A. Keywords have some predefine meanings and these meanings can be changed.

B. Keywords have some unknown meanings and these meanings cannot be changed.

C. Keywords have some predefine meanings and these meanings cannot be changed.

D. None of the above

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4

The identifier argv[] is a pointer to an array of strings.

A. True

B. False