Tag: c

Questions Related to c

To declare and initialize character array :










c





    

  1. 

    char s[] = { 'a', 'b' , 'c' };
    

    2. 

  2. 

    char s[] = "abc";
    

    3. 

  3. 

    both correct
    

    4. 

  4. 

    both wrong
    

    5. 










 Show answer












Correct Option: C
















What is the output of the following piece of code?


int x = 3, y = 5, z ;
z = x++ + ++y;

printf(“%d”,z);











c





    

  1. 

    8
    

    2. 

  2. 

    9
    

    3. 

  3. 

    10
    

    4. 

  4. 

    11
    

    5. 










 Show answer












Correct Option: B













What is the role of variables in programming languages:









c





    

  1. 

    Perform standard functions like printing to the screen
    

    2. 

  2. 

    Data storage
    

    3. 

  3. 

    Both correct
    

    4. 

  4. 

    Both wrong
    

    5. 










 Show answer












Correct Option: B













what is the output of the following program
main(){
 int x;
 printf(“%d”,x);
}









c





    

  1. 

    Unknown (random value)
    

    2. 

  2. 

    Zero
    

    3. 

  3. 

    3000
    

    4. 

  4. 

    4000
    

    5. 










 Show answer












Correct Option: A













float values(200) = ( 1 , 2 , 3 , 4 );








c





    

  1. 

    is correct
    

    2. 

  2. 

    has syntax error
    

    3. 

  3. 

    causes run-time error
    

    4. 

  4. 

    none of the above
    

    5. 










 Show answer












Correct Option: B





AI Explanation







To answer this question, let's analyze the given code:


float values(200) = ( 1 , 2 , 3 , 4 );



This line of code is attempting to declare and initialize an array called values of type float with a size of 200. However, there is a syntax error in this code.


The correct syntax for declaring and initializing an array in C++ is as follows:


float values[] = {1, 2, 3, 4};



In this case, the size of the array is automatically determined based on the number of elements provided in the initializer list.


Therefore, option B) has a syntax error is the correct answer.


Option A) is incorrect because the code has a syntax error.
Option C) is incorrect because the code does not execute to cause a run-time error.
Option D) is incorrect because the correct answer is B) has syntax error.





















To write statement hi world:









c





    

  1. 

    puts('hi world');
    

    2. 

  2. 

    puts("hi world");
    

    3. 

  3. 

    Both correct
    

    4. 

  4. 

    Both wrong
    

    5. 










 Show answer












Correct Option: B













The variables in C programming language:









c





    

  1. 

    Must be declared before being used.
    

    2. 

  2. 

    Can be used without declaration
    

    3. 

  3. 

    Can be used before declaration
    

    4. 

  4. 

    none of the above
    

    5. 










 Show answer












Correct Option: A













consider the following statement:
while ( 3 ) ;









c





    

  1. 

    Infinite loop
    

    2. 

  2. 

    Syntax error
    

    3. 

  3. 

    Executes only 3 iterations
    

    4. 

  4. 

    Executes only 4 iterations
    

    5. 










 Show answer












Correct Option: A
















To include a header file in a C program:









c





    

  1. 

    #include "stdio.h"
    

    2. 

  2. 

    #include 
    

    3. 

  3. 

    Both correct
    

    4. 

  4. 

    Both wrong
    

    5. 










 Show answer












Correct Option: A













what is the best choice to print the value of variable x where:
int x = 123;








c





    

  1. 

    printf("%f",x);
    

    2. 

  2. 

    printf("%d",x);
    

    3. 

  3. 

    printf("%c",x);
    

    4. 

  4. 

    printf("%s",x);
    

    5. 










 Show answer












Correct Option: B