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Control Instructions - C Programming Questions and Answers

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C Programming :: Control Instructions

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Control Instructions - Find Output of Program
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Control Instructions - Point Out Correct Statements

  1. What will be the output of the program?

     #include
 int main()
 {   
     int i=0;  
     for(; i5; i++);          
           printf("%d", i); 
     return 0; 
  }

     

    2. A.

    0, 1, 2, 3, 4, 5
    B.

    5
    C.

    1, 2, 3, 4
    D.

    6

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  2. What will be the output of the program?

     #include
 int main()
 {     
     char str[]="C-program";  
     int a = 5;  
     printf(a >10?"Ps\n":"%s\n", str);     
     return 0;
 }

    3. A.

    C-program
    B.

    Ps
    C.

    Error
    D.

    None of above

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  3. What will be the output of the program?

    #include 
 int main() 
 {  
     int a = 500, b = 100, c;      
     if(!a >= 400)   
         b = 300;   
  c = 200;    
   printf("b = %d c = %d\n", b, c);         
   return 0; 
}

    4. A.

    b = 300 c = 200
    B.

    b = 100 c = garbage
    C.

    b = 300 c = garbage
    D.

    b = 100 c = 200

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  4. What will be the output of the program?

     #include
 int main()
 {   
    unsigned int i = 65535; /* Assume 2 byte integer*/   
   while(i++ != 0)         
        printf("%d",++i);       
      printf("\n");  
      return 0; }

    5. A.

    Infinite loop
    B.

    0 1 2 ... 65535
    C.

    0 1 2 ... 32767 - 32766 -32765 -1 0
    D.

    No output

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  5. What will be the output of the program?

    #include
 int main()
 {   
    int x = 3;   
    float y = 3.0;    
    if(x == y)       
       printf("x and y are equal");      
    else     
       printf("x and y are not equal");  
   return 0; 
 }

    6. A.

    x and y are equal
    B.

    x and y are not equal
    C.

    Unpredictable
    D.

    No output

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  6. What will be the output of the program, if a short int is 2 bytes wide?

     #include
 int main()
 {   
     short int i = 0; 
     for(i5 && i>=-1; ++i; i>0)          
         printf("%u,", i); 
     return 0; 
}

    7. A.

    1 ... 65535
    B.

    Expression syntax error
    C.

    No output
    D.

    0, 1, 2, 3, 4, 5

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  7. What will be the output of the program?

    #include
 int main() 
 {   
    char ch;    
    if(ch = printf(""))          
        printf("It matters\n");      
   else     
        printf("It doesn't matters\n");   
   return 0; 
}

    8. A.

    It matters
    B.

    It doesn't matters
    C.

    matters
    D.

    No output

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  8. What will be the output of the program?

     #include
 int main() 
 {  
    unsigned int i = 65536; /* Assume 2 byte integer*/   
  while(i != 0)           
      printf("%d",++i);       
  printf("\n");   
  return 0; 
}

    9. A.

    Infinite loop
    B.

    0 1 2 ... 65535
    C.

    0 1 2 ... 32767 - 32766 -32765 -1 0
    D.

    No output

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  9. What will be the output of the program?

     #include
 int main()
 {   
    float a = 0.7;   
    if(0.7 > a)         
       printf("Hi\n"); 
    else     
       printf("Hello\n");  
    return 0;
 }

    10. A.

    Hi
    B.

    Hello
    C.

    Hi Hello
    D.

    None of above

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  10. What will be the output of the program?

     #include 
 int main()
 {   
     int a=0, b=1, c=3;   
     *((a) ? &b : &a) = a ? b : c;     
     printf("%d, %d, %d\n", a, b, c);     
     return 0;
 }

    11. A.

    0, 1, 3
    B.

    1, 2, 3
    C.

    3, 1, 3
    D.

    1, 3, 1

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