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String Questions

Home > Technical Aptitude > C Programming > String > General Questions
NA
SHSTTON
43
Solv. Corr.
94
Solv. In. Corr.
137
Attempted
0 M:22 S
Avg. Time

11 / 26

What is the output of the following C Program?
#include<stdio.h>
#include<string.h>
void main()
{
while (strcmp("some","some\0"))
printf("Strings are not equal\n");
}

ANo Output No Error

BString are not equal

CCompilation Error

DNone of these

Answer: Option A

Explanation:

Ending the string constant with \0 explicitly makes no difference.
So "some" and "some\0" are equivalent. So, strcmp returns 0 .
So breaking out of the while loop.

Workspace

NA
SHSTTON
12
Solv. Corr.
86
Solv. In. Corr.
98
Attempted
0 M:0 S
Avg. Time

12 / 26

What is the output of the following C Program?
#include<stdio.h>
void main()
{
char str1[] = {'s','o','m','e'}; 
char str2[] = {'s','o','m','e','\0'}; 
while (strcmp(str1,str2)) 
printf("Strings are not equal\n"); 
}

ANo Output No Error

BString are not equal

Cstack overflow

DNone of these

Answer: Option C

Explanation:

If a string constant is initialized explicitly with characters, '\0' is not appended automatically to the string.
Since str1 doesn't have null termination, it treats whatever the values that are in the following positions as part of the string until it randomly reaches a '\0'. So str1 and str2 are not the same.

Workspace

NA
SHSTTON
23
Solv. Corr.
72
Solv. In. Corr.
95
Attempted
0 M:0 S
Avg. Time

13 / 26

What is the output of the following 'C' program ?
#include<stdio.h>
int main()
{
char arr[] = "Its very beautiful";
char *ptr = "Hello world";
char *str = "Sieze the day";
ptr = &arr[0];
printf("%s\n", ptr);
ptr = &str[0];
printf("%s\n", ptr);
}

ACompilation Error

BIts very beautiful Hello world

CIts very beautiful Sieze the day

DNone of these

Answer: Option B

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
38
Solv. Corr.
52
Solv. In. Corr.
90
Attempted
0 M:0 S
Avg. Time

14 / 26

Choose the correct option.

Recursive function are executed in


ALast in first out order

BFirst in first out order

CParallel fashion

Dall of these

Answer: Option A

Explanation:

In recursion, a stack frame gets created, and for each function call, an entry is created in the stack frame, which is also known as Active record instance. Each of the entries into the stack gets executed in a LIFO manner because a stack always executes in a LIFO manner i.e, last in first out. 

Workspace

NA
SHSTTON
78
Solv. Corr.
261
Solv. In. Corr.
339
Attempted
0 M:0 S
Avg. Time

15 / 26

What is the output of the program?
#include <stdio.h>
#include<string.h>
void main ()
{
char str[][5] = {{'h','e','l','l'}, {'w','e','l','l'}};
printf("\n %s ", strncpy (*str, *(str + 1), 0));
}

Aell

Bwell

Cwel

Dhell

Answer: Option D

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
127
Solv. Corr.
207
Solv. In. Corr.
334
Attempted
0 M:6 S
Avg. Time

16 / 26

What is the output of the program?
#include <stdio.h>
#include<string.h>

void main () {
char str[][5] = {{'h','e','l','l'}, {'w','e','l','l'}};
char str1[15] =    "All  is  ";
printf ("%s  ", strcat(strchr(str1,  'l'),  *(str+1)));
}

Alwell

Bllwell

Cll is well

Dl is well

Answer: Option C

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
37
Solv. Corr.
59
Solv. In. Corr.
96
Attempted
0 M:0 S
Avg. Time

17 / 26

Predict the output or error(s) for the following:
#include <stdio.h>
void main()
    {
            char string[]="Hello World";
            display (string);
    }
    void display (char *string)
    {
            printf("%s",string);
    }

ACompiler Error : Type mismatch in redeclaration of function display

BHello World

CHello

Dsegmentation fault

Answer: Option A

Explanation:

i got ans as Hello World by compiling

Workspace

NA
SHSTTON
29
Solv. Corr.
56
Solv. In. Corr.
85
Attempted
0 M:0 S
Avg. Time

18 / 26

Choose the correct option.

In a compiler there is 36 bit for a word and to store a character 8 bits are needed. IN this to store a character two words are appended .Then for storing a K characters string, How many words are needed.


A2k/9

B(2k+8)/9

C(k+8)/9

D2*(k+8)/9

Answer: Option A

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
66
Solv. Corr.
49
Solv. In. Corr.
115
Attempted
0 M:0 S
Avg. Time

19 / 26

What will be output of the following "c" code?
#include<stdio.h>
void main()
{
char s[]="main";
int i;
for(i=0; s[i]; i++)
printf("%c %c %c %c", s[i], *(s+i), *(i+s),i[s]);
}

Amain

BCompilation Error

Cm m m ma a a ai i i in n n n

DNone of these

Answer: Option C

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
22
Solv. Corr.
63
Solv. In. Corr.
85
Attempted
0 M:0 S
Avg. Time

20 / 26

Predict the output or error(s) for the following:
#include<stdio.h>
main(){
    char string[]="HelloWorld";
    display (string);
}
void display (char *string){
     printf("%s",string);
}

AHello

BHelloWorld

CSyntax Error

DCompiler Error

Answer: Option D

Explanation:

Compiler Error: Type mismatch in re declaration of function display

Workspace

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