String Operatons

Which of the following function sets first n characters of a string to a given character?
1. strinit()
2. strnset()
3. strset()
4. strcset()
If the two strings are identical, then strcmp() function returns
1. -1
2. 1
3. 0
4. yes
How will you print \n on the screen?
1. printf("\n");
2. echo "\\n";
3. printf('\n');
4. printf("\\n");
The library function used to find the last occurrence of a character in a string is
1. strnstr()
2. laststr()
3. strrchr()
4. strstr()
Which of the following function is used to find the first occurrence of a given string in another string?
1. strchr()
2. strrchr()
3. strstr()
4. strnset()
Which of the following function is more appropriate for reading in a multi-word string?
1. printf();
2. scanf();
3. gets();
4. puts();
What will be the output of the program ?

#include<stdio.h>
#include

int main()
{
char str1[20] = "Hello", str2[20] = " World";
printf("%s\n", strcpy(str2, strcat(str1, str2)));
return 0;
}
1. Hello
2. World
3. Hello World
4. WorldHello
What will be the output of the program ?

#include<stdio.h>

int main()
{
char p[] = "%d\n";
p[1] = 'c';
printf(p, 65);
return 0;
}
1. A
2. a
3. c
4. 65
What will be the output of the program ?
#include<stdio.h>
#include

int main()
{
printf("%d\n", strlen("123456"));
return 0;
}
1. 6
2. 12
3. 7
4. 2
What will be the output of the program ?

#include<stdio.h>
#include

int main()
{
char str[] = "Need\0\Book\0";
printf("%s\n", str);
return 0;
}
1. Book
2. Need
3. Need Book
4. Need\0Book
What will be the output of the program If characters 'a', 'b' and 'c' enter are supplied as input?

#include<stdio.h>

int main()
{
void fun();
fun();
printf("\n");
return 0;
}
void fun()
{
char c;
if((c = getchar())!= '\n')
fun();
printf("%c", c);
}
1. abc abc
2. bca
3. Infinite loop
4. cba
What will be the output of the program ?

#include<stdio.h>

int main()
{
printf("Need", "Book\n");
return 0;
}
1. Error
2. Ned Book
3. Need
4. Book
What will be the output of the program ?

#include<stdio.h>

int main()
{
char str[7] = "Needbook";
printf("%s\n", str);
return 0;
}
1. Error
2. Needbook
3. Cannot predict
4. None of above
What will be the output of the program ?

#include<stdio.h>

int main()
{
char *names[] = { "Suresh", "Siva", "Sona", "Baiju", "Ritu"};
int i;
char *t;
t = names[3];
names[3] = names[4];
names[4] = t;
for(i=0; i<=4; i++)
printf("%s,", names[i]);
return 0;
}
1. Suresh, Siva, Sona, Baiju, Ritu
2. Suresh, Siva, Sona, Ritu, Baiju
3. Suresh, Siva, Baiju, Sona, Ritu
4. Suresh, Siva, Ritu, Sona, Baiju
What will be the output of the program ?

#include<stdio.h>
#include

int main()
{
char str[] = "Need\0\Book\0";
printf("%d\n", strlen(str));
return 0;
}
1. 10
2. 6
3. 5
4. 11
Which among the given options is the right explanation for the statement size_t strcspn(c, s)?
1. return length of prefix of s consisting of characters not in c
2. return length of prefix of s consisting of characters present in c
3. return length of prefix of c consisting of characters not in s
4. return length of prefix of c consisting of characters present in s
The mem functions are meant for _______
1. returning a pointer to the token
2. manipulating objects as character arrays
3. returning a pointer for implemented-defined string
4. returning a pointer to first occurrence of string in another string
Functions whose names begin with “strn”
1. manipulates sequences of arbitrary characters
2. manipulates null-terminated sequences of characters
3. manipulates sequence of non – null characters.
4. returns a pointer to the token
What is the function of strcoll()?
1. compares the string, result is dependent on the LC_COLLATE
2. copies the string, result is dependent on the LC_COLLATE
3. compares the string, result is not dependent on the LC_COLLATE
4. copies the string, result is not dependent on the LC_COLLATE
Which of the following is the variable type defined in header string. h?
1. sizet
2. size
3. size_t
4. size-t
NULL is the macro defined in the header string. h
1. True
2. False
What will be the output of the following C code?

const char str1[]="ABCDEF1234567";
const char str2[] = "269";
len = strcspn(str1, str2);
printf("First matching character is at %d\n", len + 1);
1. First matching character is at 8
2. First matching character is at 7
3. First matching character is at 9
4. First matching character is at 12
Is there any function declared as strstr()?
1. True
2. False
The______function returns a pointer to the first character of a token.
1. strstr()
2. strcpy()
3. strspn()
4. strtok()
What will be the output of the following C code?

char str1[] = "Helloworld ";
char str2[] = "Hello";
len = strspn(str1, str2);
printf("Length of initial segment matching %d\n", len );
1. 6
2. 5
3. 4
4. no match
This function offers the quickest way to determine whether two character sequences of the same known length match character for the character up to and including any null character in both.
1. strcmp()
2. memcmp()
3. strncmp()
4. no such function
What will be the output of the following C code?

char str1[15];
char str2[15];
int mat;
strcpy(str1, "abcdef");
strcpy(str2, "ABCDEF");
mat= strncmp(str1, str2, 4);
if(mat< 0)
printf("str1 is not greater than str2");
else if(mat> 0)
printf("str2 is is not greater than str1");
else
printf("both are equal");
1. str1 is not greater than str2
2. str2 is not greater than str1
3. both are equal
4. error in given code
What will be the output of the following C code?

const char str1[10]="Helloworld";
const char str2[10] = "world";
char *mat;
mat = strstr(str1, str2);
printf("The substring is:%s\n", mat);
1. The substring is:world
2. The substring is:Hello
3. The substring is:Helloworld
4. error in the code
A string in C is
1. 1-D Array of Character
2. 2-D Array of Character
3. Any of i & ii
4. None of the above

String Operatons

Quiz