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

    #include <stdio.h>
        void main()
        {
            int n = 0;
            int *p = &n;
            printf("%p\n", p);
            p++;
            printf("%p\n ", p);
        }
    

1. 1. Compilation Error

   
   
   

   2. Different memory address

   
   
   

   3. Garbage value

   
   
   

   4. Same memory address

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   0x7ffc391e1404
   0x7ffc391e1408

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

    #include <stdio.h>
        int n = 0;
        void main()
        {
            int *const p = &n;
            printf("%p\n", p);
            p++;
            printf("%p\n ", p);
        }
    

1. 1. Same memory address

   
   
   

   2. Compilation Error

   
   
   

   3. Different memory address

   
   
   

   4. Garbage value

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   main.c: In function ‘main’:
   main.c:7:10: error: increment of read-only variable ‘p’
            p++;
   

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

     #include <stdio.h>
        int num = 0;
        void main()
        {
            int *p = #
            printf("%p\n", p);
            num++;
            printf("%p\n ", p);
        }
    

1. 1. Compilation Error

   
   
   

   2. Same memory address

   
   
   

   3. Different memory address

   
   
   

   4. Varies

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   Same memory address

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

    #include <stdio.h>
        int main()
        {
            int n = 12;
            void *ptr = &n;
            printf("%d\n", (int)*ptr);
            return 0;
        }
    

1. 1. Compilation Error

   
   
   

   2. Garbage value

   
   
   

   3. 12

   
   
   

   4. Nothing

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   Compilation Error
   

   main.c: In function ‘main’:
   main.c:6:29: warning: dereferencing ‘void *’ pointer
            printf("%d\n", (int)*ptr);
                                ^~~~
   main.c:6:24: error: invalid use of void expression
            printf("%d\n", (int)*ptr);
   

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

    #include <stdio.h>
        int *fun();
        int main()
        {
            int *ptr = fun();
            printf("%d\n", *ptr);
        }
        int *fun()
        {
            int *p = (int*)malloc(sizeof(int));
            *p = 11;
            return p;
        }
    

1. 1. Compilation Error

   
   
   

   2. 11

   
   
   

   3. Undefined behaviour

   
   
   

   4. Segmentation fault/runtime crash since pointer to local variable is returned

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   11

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