C Language Operators Quiz
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Questions and Answers

What does the term 'operator' refer to in programming?

  • A data type in C programming
  • An operand used in calculations
  • A value that performs operations
  • A symbol used to perform operations (correct)

In the expression int value = 10+20*20;, why is the value 210?

  • Multiplicative operator has higher precedence than the additive operator (correct)
  • Additive operator has higher precedence than the multiplicative operator
  • Precedence of operators does not matter in this expression
  • The value should have been 400

Which type of operation does the minus (-) operator perform?

  • Increment
  • Multiplication
  • Subtraction (correct)
  • Division

What does the modulo (%) operator do in arithmetic operations?

<p>Calculates the remainder of division (A)</p> Signup and view all the answers

Which operator is used to increment a variable by 1 in C programming?

<p>++ (B)</p> Signup and view all the answers

What is the primary purpose of a logical operator in programming?

<p>Control flow based on conditions (B)</p> Signup and view all the answers

What is the purpose of the printf() function in C?

<p>To print values on the console screen (A)</p> Signup and view all the answers

Which function is used to read values from the keyboard in C?

<p>scanf() (C)</p> Signup and view all the answers

In C programming, what does the '&' symbol represent in scanf() function?

<p>It is the address-of operator for memory location (D)</p> Signup and view all the answers

What is the purpose of the sprintf() function in C?

<p>To store string data in memory locations (D)</p> Signup and view all the answers

Which function reads data from a string or character array instead of the console screen in C?

<p>sscanf() (C)</p> Signup and view all the answers

What is the purpose of the scanf() function in C?

<p>To read values from the keyboard (D)</p> Signup and view all the answers

What is the purpose of the getchar() function?

<p>To read a single character from the keyboard and store it (B)</p> Signup and view all the answers

What is the main difference between the getchar() and putchar() functions?

<p>getchar() reads characters while putchar() writes characters (A)</p> Signup and view all the answers

Which function is used to read a single string from the keyboard in C?

<p>Gets(String) (A)</p> Signup and view all the answers

In C programming, what does scanf() do?

<p>Reads input from the standard input stream and scans it according to the provided format (A)</p> Signup and view all the answers

What does the 'int printf(const char *format,...)' function do?

<p>Writes output to the standard output stream based on the provided format (B)</p> Signup and view all the answers

What does a '%f' format specifier represent in C?

<p>Decimal floating-point value (C)</p> Signup and view all the answers

Which function is used to display a string on the screen or console in C?

<p>Puts(str) (B)</p> Signup and view all the answers

'%ld' format specifier in C is used for which data type?

<p>Long int (B)</p> Signup and view all the answers

Which function is used to read a single character from the keyboard and store it?

<p>Getchar() (D)</p> Signup and view all the answers

What does the 'int i;' variable hold in this line of code: scanf("%s %d", str, &amp;i);?

<p>An integer value stored by reference (C)</p> Signup and view all the answers

In C language, how are the corresponding bits of two operands treated in the bitwise AND operation?

<p>If both bits are 1, the output is 1; otherwise, it is 0 (D)</p> Signup and view all the answers

What is the purpose of the sizeof operator in C?

<p>To determine the memory space allocated for C data types (B)</p> Signup and view all the answers

Which operator in C is used for bitwise exclusive OR operations?

<p>^ (C)</p> Signup and view all the answers

What does the comma operator do in C programming?

<p>Links related expressions together (B)</p> Signup and view all the answers

Which type of expression contains only arithmetic operators and operands?

<p>Arithmetic expression (B)</p> Signup and view all the answers

What does the unary minus (-) operator do in C?

<p>Acts as a prefix operator for negation (C)</p> Signup and view all the answers

How are binary expressions evaluated in C?

<p>From left to right (B)</p> Signup and view all the answers

What is the output when a bitwise OR operation is performed on two operands with bit values 1 and 0?

<p>1 (D)</p> Signup and view all the answers

'A' + 2 evaluates to which value in C?

<p>67 (A)</p> Signup and view all the answers

What is the first step to convert a valid C expression to its mathematical form and evaluate it?

<p>Apply precedence and associativity rules (D)</p> Signup and view all the answers

Which operator in the given expression has the highest precedence?

<ul> <li>(D)</li> </ul> Signup and view all the answers

What is the associativity of multiplicative operators in the expression?

<p>Left-to-right (C)</p> Signup and view all the answers

How are sub-expressions treated after an operator is bound to their operands?

<p>Treated as a single operand (A)</p> Signup and view all the answers

Which step is crucial in converting a complex C expression to a mathematical equation?

<p>Determining operator binding sequence (A)</p> Signup and view all the answers

What is the main concern with the expression -a-+ -b++ * -c?

<p>Invalid due to excessive use of operators (D)</p> Signup and view all the answers

Which type of associativity do additive operators have?

<p>Left-to-right (D)</p> Signup and view all the answers

What are the first set of operators scanned in the given expression?

<p>-, ++, -- (A)</p> Signup and view all the answers

In which order are multiplicative operators scanned in the expression?

<p>From left-to-right (C)</p> Signup and view all the answers

Why are sub-expressions considered as single operands after an operator is bound?

<p>To simplify further evaluations (D)</p> Signup and view all the answers

Which operator precedence determines the order of evaluation of expressions in C programming?

<p>Arithmetic Operators (B)</p> Signup and view all the answers

In C, for the expression 20/4*2, what is the result due to the precedence of operators?

<p>10 (B)</p> Signup and view all the answers

Which associativity describes the direction of evaluation for the unary operators in C?

<p>Right to Left (C)</p> Signup and view all the answers

What is the result of the expression 5 + 5 * 3 - 2 / 2 due to the precedence of operators in C?

<p>17 (A)</p> Signup and view all the answers

In C language, what is the purpose of the Turnery or Conditional Operator?

<p>To assign values based on a condition (D)</p> Signup and view all the answers

Which category of operators includes ++ and -- that are evaluated from left to right in C?

<p>Misc. Operator (C)</p> Signup and view all the answers

What will be the outcome of the expression 3 - 2 + 5 * 6 / 2 according to the precedence of operators in C?

<p>-1 (D)</p> Signup and view all the answers

In C programming, what is the output of a bitwise XOR operation if one of the operands is 1 and the other is 0?

<p>1 (B)</p> Signup and view all the answers

When evaluating an arithmetic expression in C, how does the unary minus operator (-) operate on a single operand?

<p>Negates the operand (A)</p> Signup and view all the answers

For the expression 'A' + 2 in C, what does the value 67 represent?

<p>Character code of 'A' (B)</p> Signup and view all the answers

Which bitwise operator in C is used to check if corresponding bits of two operands are both 1?

<p>&amp; (A)</p> Signup and view all the answers

What is the main purpose of the comma operator in linking expressions together?

<p>Evaluation order (D)</p> Signup and view all the answers

When evaluating valid arithmetic expressions in C, which type of operands can be involved?

<p>Integer and floating-point (C)</p> Signup and view all the answers

For bitwise OR operations in C, what is the output if none of the operands have a bit value of 1?

<p>0 (D)</p> Signup and view all the answers

'sizeof' operator in C is used to determine what aspect of operands?

<p>Size allocated in memory (D)</p> Signup and view all the answers

In the expression -a+ b * c - d I e + f, which operators have the next highest precedence after the unary operators?

<p>Additive operators (A)</p> Signup and view all the answers

For the expression -a-+ -b++ * -c, what is the primary reason it is considered invalid?

<p>Excessive use of unary operators (D)</p> Signup and view all the answers

If the expression -a+ b * c - d I e + f is evaluated starting from left-to-right, what will be the first set of operands for the binary operators?

<p>-a+ b * c (C)</p> Signup and view all the answers

Considering the expression -a-+ -b++ * -c, what is the associativity of the additive operators used in this context?

<p>Left-to-right (D)</p> Signup and view all the answers

What is the order of evaluation specified for sub-expressions at the same level in C expressions?

<p>No specified order (D)</p> Signup and view all the answers

When evaluating expressions, which type of operator has the highest precedence?

<p>Multiplicative operators (C)</p> Signup and view all the answers

In C, how are sub-expressions treated after an operator is bound to their operands?

<p>They are considered as single operands for adjacent operators (B)</p> Signup and view all the answers

Assuming a=1.5, b=2.5, and c=3.5, what would be the result of evaluating the expression a+b*c?

<p>$8.75$ (C)</p> Signup and view all the answers

What is the purpose of the sprintf() function in C?

<p>Prints a string into a character array (A)</p> Signup and view all the answers

Which function is used to store the variable value on the memory location of that variable in C?

<p>scanf() (B)</p> Signup and view all the answers

What does the '%d' format specifier represent in C?

<p>Integer data type (D)</p> Signup and view all the answers

Which function reads data from the string or character array instead of the console screen in C?

<p>sscanf() (D)</p> Signup and view all the answers

'&' symbol in scanf() function is used for what purpose in C?

<p>To store the variable value on memory location (C)</p> Signup and view all the answers

What is the primary difference between sprintf() and printf() functions in C?

<p>sprintf() stores the output in a character array, while printf() prints directly to the screen. (C)</p> Signup and view all the answers

'scanf()' and 'sscanf()' functions in C differ mainly in their:

<p>'&amp;' symbol usage (D)</p> Signup and view all the answers

'sscanf()' function in C reads data from where compared to 'scanf()' function?

<p>String or character array (D)</p> Signup and view all the answers

What is the purpose of the 'sscanf()' function in C?

<p>To read input from a string according to the format provided (A)</p> Signup and view all the answers

What is the primary difference between 'printf()' and 'sprintf()' functions in C?

<p>printf() writes output to the standard output stream whereas sprintf() formats and stores the output in a string (B)</p> Signup and view all the answers

What does the '%n' format specifier do in C?

<p>Prints nothing (D)</p> Signup and view all the answers

In C, what does the 'puts()' function do compared to 'gets()' function?

<p>'puts()' displays a string on the screen while 'gets()' reads a single string from keyboard (A)</p> Signup and view all the answers

What does the '%lf' format specifier represent in C?

<p>Double value for fractional or floating data (C)</p> Signup and view all the answers

How does the 'scanf("%s %d", str, &i);' line in C function?

<p>Scans a string followed by an integer (A)</p> Signup and view all the answers

'getchar()' and 'putchar()' functions are primarily used to perform which operations in C?

<p>'getchar()' reads and 'putchar()' writes character values to the screen or console (D)</p> Signup and view all the answers

'scanf("%s %d", str, &i);' function is primarily used for what purpose in C programming?

<p>Reading one string and one integer from standard input stream (C)</p> Signup and view all the answers

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