C Programming Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to C Programming Framework. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Answer : D
Explanation
-2, the one’s compliment of 1 is 1110 (binary) which is equivalent to two’s compliment of 2, ie -2.
Q 2 - What is the following program doing?
#include<stdio.h>
main()
{
FILE *stream=fopen("a.txt",'r');
}
A - Trying to open “a.txt” in read mode
B - Trying to open “a.txt” in write mode.
Answer : D
Explanation
Compile error, second argument for fopen is invalid, should be a string.
Q 3 - Following is the invalid inclusion of a file to the current program. Identify it.
Answer : C
Explanation
option (a) & (b) are valid. There is no such syntax or provision as in option (c).
Q 4 - An exception is __
Answer : A
Explanation
When the program is in execution phase the possible unavoidable error is called as an exception.
Q 5 - What is the output of the following statement?
#include<stdio.h>
main()
{
printf("%d", !0<2);
}
Answer : B
Explanation
Priority of ! is greater than <. Relational operator returns 1 if relation between the expressions is true otherwise 0.
Q 6 - Choose the correct statement that can retrieve the remainder of the division 5.5 by 1.3?
Answer : C
Explanation
A floating-point constant without an f, F, l, or L suffix has type double. If the letter f or F is the suffix, the constant has type float. If suffixed by the letter l or L, it has type long double.
Q 7 - Which library function can convert an integer/long to a string?
Answer : A
Explanation
In C, ltoa() function converts long/integer data type to string data type.
char *ltoa(long N, char *str, int base);
Q 8 - What do you mean by “int (*ptr)[10]”
A - ptr is an array of pointers to 10 integers
B - ptr is a pointer to an array of 10 integers
Answer : B
Explanation
Explanation: with or without the brackets surrounding the *p, still the declaration says it’s an array of pointer to integers.
Q 9 - The correct order of evaluation for the expression “z = x + y * z / 4 % 2 – 1”
Answer : D
Explanation
* / % holds highest priority than + - . All with left to right associativity.
Q 10 - Which statement can print \n on the screen?
Answer : A
Explanation
Option A is the correct answer. In C programming language, "\n" is the escape sequence for printing a new line character. In printf("\\n"); statement, "\\" symbol will be printed as "\" and “n” will be known as a common symbol.
