Variables And Data Types In C Plus Plus — Part 2 MCQs with Explanations

char *ptr is the correct answer to “What is the correct way to declare a pointer to a character in C++”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

The value of the variable may change at any time by external factors is the correct answer to “What does the 'volatile' keyword indicate in C++”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

TRUE is the correct answer to “What is the output of the following code: cout << (true && true); in C++”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

boolean is the correct answer to “Which type is best suited to represent the logical values”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

Compiler error may be possible is the correct answer to “What will be the output of the following C++ function? int main() { register int i = 1; int *ptr = &i; cout << *ptr; return 0; }”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

False is the correct answer to “What is the value of the bool? bool is_int(789.54)”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

J is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int main() { char c = 74; cout << c; return 0; }”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

1 is the correct answer to “Evaluate the following. (false && true) || false || true”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

Unsigned integer of at least 16 bits is the correct answer to “The size_t integer type in C++ is”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

error is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int main() { int a = 10; if (a < 10) { for (i = 0; i < 10; i++) cout << i; } else { cout << i; } return 0; }”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

bool value evaluates to false is the correct answer to “What happens when a null pointer is converted into bool”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

123 is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int main() { float i = 123.0f; cout << i << endl; return 0; }”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

array type is the correct answer to “Pick the odd one out.”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

128 is the correct answer to “How many characters are specified in the ASCII scheme”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

1 declares i,2 declares and defines i is the correct answer to “Choose the correct option. extern int i; int i;”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

F or f is the correct answer to “Which is used to indicate single precision value”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

octal, decimal, character, hexadecimal is the correct answer to “0946, 786427373824, 'x' and 0X2f are . . . . . . . . and . . . . . . . . literals respectively.”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

integer is the correct answer to “In which type do the enumerators are stored by the compiler”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

double is the correct answer to “The value 132.54 can be represented using which data type”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

Based on the number of bits in the system is the correct answer to “What is the size of wchar_t in C++”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

x is greater is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int main() { int x = -1; unsigned int y = 2; if(x > y) { cout << "x is greater"; } else { cout << "y is greater"; } }”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

234 is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; void addprint() { static int s = 1; s++; cout << s; } int main() { addprint(); addprint(); addprint(); return 0; }”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

16 is the correct answer to “What is the value of p in the following C++ code? #include <iostream> using namespace std; int main() { int p; bool a = true; bool b = false; int x = 10; int y = 5; p = ((x | y) + (a + b)); cout << p; return 0; }”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

52 is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int f(int p, int q) { if (p > q) return p; else return q; } main() { int a = 5, b = 10; int k; bool x = true; bool y = f(a, b); k =((a * b) + (x + y)); cout << k; }”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

(v & (v – 1)) == 0 is the correct answer to “Which of these expressions will return true if the input integer v is a power of two”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

CHAR_BIT is the correct answer to “What constant defined in <climits> header returns the number of bits in a char”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

10 is the correct answer to “What will be the output of the following C++ code? #include <stdio.h> int main() { char a = '\012'; printf("%d", a); return 0; }”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

it will not allocate memory is the correct answer to “What will happen when defining the enumerated type”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

extensible is the correct answer to “When a language has the capability to produce new data type mean, it can be called as”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

only iv is the correct answer to “Which of the given statements are false i. extern int func; ii. extern int func2(int,int); iii. int func2(int,int); iv. extern class foo;”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

-1 1 is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int main() { int i = 3; int l = i / -2; int k = i % -2; cout << l << k; return 0; }”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

flags an error is the correct answer to “What does the following statement mean? void a;”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

Implementation defined is the correct answer to “What is the value of the following 8-bit integer after all statements are executed? int x = 1; x = x << 7; x = x >> 7;”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

Depends on compiler is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int main() { int num = 0x20 + 020 + 20; cout << sizeof(num)<<'\n'; return 0; }”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

void is the correct answer to “Which of the following will not return a value”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

1 is the correct answer to “Suppose in a hypothetical machine, the size of char is 32 bits. What would sizeof(char) return”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

Yes is the correct answer to “Is bool a fundamental data type in C++”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

ANDing integer 'a' with 'true' :8 is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int main() { int a = 8; cout << "ANDing integer 'a' with 'true' :" << (a && true); return 0; }”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

void is the correct answer to “Which data type is used to represent the absence of parameters”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.

compile time error is the correct answer to “What will be the output of the following C++ code? #include <iostream> using namespace std; int main() { enum channel {star, sony, zee}; enum symbol {hash, star}; int i = 0; for (i = star; i <= zee; i++) { printf("%d ", i); } return 0; }”. This question is standard in competitive examination syllabi for Variables And Data Types In C Plus Plus.