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. 
      

    

    

    

      

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        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. 
      

    

    

    

      

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        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. 
      

    

    

    

      

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        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. 
      

    

    

    

      

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        Correct Option: B
      

    

  


    



      

    

      

          
To write statement hi world:


      

    

    

      
          c

    

    

      
    
          
  1. 
            
    puts('hi world');
    

          
    2. 
          
  2. 
            
    puts("hi world");
    

          
    3. 
          
  3. 
            
    Both correct
    

          
    4. 
          
  4. 
            
    Both wrong
    

          
    5. 
      

    

    

    

      

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        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. 
      

    

    

    

      

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        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. 
      

    

    

    

      

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        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