81. What will be the final value of n4 in the following C code?
    

    #include <stdio.h>
        int main()
        {
            int n1 = 8, n2 = 4, n3 = 4;
            int n4;
            n4 = n2 + n3 == n1;
            printf("%d", n4);
        }
    

1. 1. 8

   
   
   

   2. 4

   
   
   

   3. 1

   
   
   

   4. 0

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   1

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82. What will be the output of the following C code?
    

    #include <stdio.h>
        int main()
        {
            int num = 12;
            if (num == num--)
                printf("TRUE 1\t");
            num = 10;
            if (num == --num)
                printf("TRUE 2\t");
        }
    

1. 1. TRUE 2

   
   
   

   2. TRUE 1

   
   
   

   3. Compilation Error

   
   
   

   4. Runtime Error

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   This is a sequence point problem and hence the result will be implementation dependent.

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83. What is the difference between the following 2 codes?
    

    //Program 1
    #include <stdio.h> 
        int main()
        {
            int n3, n1 = 2, n2 = 3;
            n3 =  n1++ + ++n2;
            printf("%d %d %d", n3, n1, n2);
        }
    

    
    

    //Program 2
    #include <stdio.h> 
        int main()
        {
            int n3, n1 = 2, n2 = 3;
            n3 =  n1++ + +++n2;
            printf("%d %d %d", n3, n1, n2);
        }
    

1. 1. Space does make a difference, values of n1, n2, n3 are different

   
   
   

   2. No difference as space doesn’t make any difference, values of n1, n2, n3 are same in both the case

   
   
   

   3. Program 2 has syntax error, program 1 is not

   
   
   

   4. Program 1 has syntax error, program 2 is not

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   Program 2 has syntax error, program 1 is not

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84. Relational operators cannot be used on ____________.

1. 1. float

   
   
   

   2. strings

   
   
   

   3. long

   
   
   

   4. structure

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   structure

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85. What will be the output of the following C code?
    

    #include <stdio.h>
        void main()
        {
            int n1 = 15;
            int n2 = 16;
            n1 < n2 ? n1 = n1 + 1 : n2 = n2 + 1;
            printf("%d", n1);
        }
    

1. 1. 15

   
   
   

   2. 16

   
   
   

   3. Compilation Error

   
   
   

   4. Runtime Error

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   Compilation Error
   

   main.c: In function ‘main’:
   main.c:6:36: error: lvalue required as left operand of assignment
            n1 < n2 ? n1 = n1 + 1 : n2 = n2 + 1;
   

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