C Programming · all questions

Arrays and Strings
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Q21

What is the purpose of the fgets function in C?

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Q22

What does the strtok function do in C?

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Q23

How do you declare a two-dimensional integer array in C with 3 rows and 4 columns?

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Q24

What is the result of the expression strlen("Hello") in C?

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Q25

Which function is used to find the first occurrence of a character in a string in C?

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Q26

How do you declare a string in C that can store up to 50 characters?

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Q27

What is the purpose of the strncpy function in C?

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Q28

Which function is used to convert a string to an integer in C?

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Q29

What does the fgets function in C do when it encounters a newline character?

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Q30

How can you check if two strings are equal in C?

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Q31

What is right way to Initialize array?

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Q32

What will be the output of the program?

#include<stdio.h>
void main()
{
    int a[5] = {5, 1, 15, 20, 25};
    int i, j, m;
    i = ++a[1];
    j = a[1]++;
    m = a[i++];
    printf("%d, %d, %d", i, j, m);
}

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Q33

What will be the output of following program code?

#include <stdio.h>
int main(void)
{
    char p;
    char buf[10] = {1, 2, 3, 4, 5, 6, 9, 8};
    p = (buf + 1)[5];
    printf("%d", p);
    return 0;
}

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Q34

An array elements are always stored in ________ memory locations.

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Q35

Let x be an array. Which of the following operations are illegal?
I. ++x
II. x+1
III. x++
IV. x*2

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Q36

What is the maximum number of dimensions an array in C may have?

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Q37

Size of the array need not be specified, when

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Q38

Consider the following type definition.

typedef char x[10];
x myArray[5];

What will sizeof(myArray) be ? (Assume one character occupies 1 byte)

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Q39

What will be printed after execution of the following code?

void main()
{
      int arr[10] = {1,2,3,4,5};
      printf("%d", arr[5]);
}

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Q40

What will be the output of the following program?

void main()
{
      char str1[] = "abcd";
      char str2[] = "abcd";
      if(str1==str2)
            printf("Equal");
      else
            printf("Unequal");
}

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