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- Functions in C
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- Pointers in C
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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.
Q 1 - What is the output of the following code snippet?
#includemain() { int const a = 5; a++; printf(%d,a); }
Answer : D
Explanation
Compile error - constant variable cannot be modified.
main()
{
int const a = 5;
a++;
printf(%d,a);
}
Q 2 - What is the output of the following program?
#includemain() { int i = 1; while(i++<=5); printf("%d ",i++); }
Answer : B
Explanation
6, there is an empty statement following while.
Q 3 - What is the output of the following program?
#includemain() { int a[3] = {2,1}; printf("%d", a[a[1]]); }
Answer : B
Explanation
1, The inner indirection evaluates to 1, and the value at index 1 for outer indirection is 1.
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 program?
#includemain() { char *s = "Fine"; *s = 'N'; printf("%s", s); }
Answer : D
Explanation
*s=N, trying to change the character at base address to N of a constant string leads to runtime error.
Q 6 - How to round-off a value 5.77 to 6.0?
Answer : A
Explanation
ceil( ) function in C returns nearest integer value which is greater than or equal tothe argument passed to thefunction.
#include#include int main() { float x=5.77; printf("ceil of %f is %f\n", x, ceil(x)); return 0; }
Q 7 - The equivalent pointer expression by using the array elementa[i][j][k][2],
Answer : B
Explanation
If, the array elementis a[i][j] = *(*(a+i)+j)
If, the array elementis a[i][j][k]= *(*(*(a+i)+j)+k)
Q 8 - Choose the correct statement that is a combination of these two statements,
Statement 1: char *p; Statement 2: p = (char*) malloc(100);
B - char *p = (char*)malloc(100);
Answer : B
Explanation
ptr = (data type *)malloc(size);
The given above code is a prototype of malloc() function, where ptr indicates the pointer.
char *p = (char*)malloc(100);
In this code, *p is a pointer of type char and malloc() function allocates the memory for char.
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 - Choose the function that is most appropriate for reading in a multi-word string?
Answer : D
Explanation
gets (); = Collects a string of characters terminated by a new line from the standard input streamstdin