C data types: unions, bit fields and enums

1. 1What will be the output of the program ?
   #include<stdio.h>
   
   int main()
   {
   union var
   {
   int a, b;
   };
   union var v;
   v.a=10;
   v.b=20;
   printf("%d\n", v.a);
   return 0;
   }
   

   1. A10
   2. B20
   3. C30
   4. D0
2. 2What will be the output of the program ?
   #include<stdio.h>
   
   int main()
   {
   struct value
   {
   int bit1:1;
   int bit3:4;
   int bit4:4;
   }bit={1, 2, 13};
   
   printf("%d, %d, %d\n", bit.bit1, bit.bit3, bit.bit4);
   return 0;
   }
   

   1. A-1, 2, -3
   2. B1, 2, 3
   3. C1, 4, 4
   4. D-1, -2, -13
3. 3What will be the output of the program in 16 bit platform (Turbo C under DOS) ?
   #include<stdio.h>
   
   int main()
   {
   struct value
   {
   int bit1:1;
   int bit3:4;
   int bit4:4;
   }bit;
   printf("%d\n", sizeof(bit));
   return 0;
   }
   

   1. A1
   2. B2
   3. C4
   4. D9
4. 4What will be the output of the program ?
   #include<stdio.h>
   
   int main()
   {
   enum days {MON=-1, TUE, WED=6, THU, FRI, SAT};
   printf("%d, %d, %d, %d, %d, %d\n", MON, TUE, WED, THU, FRI, SAT);
   return 0;
   }
   

   1. A-1, 0, 6, 7, 8, 9
   2. B-1, 0, 1, 2, 3, 4
   3. C-1, 2, 6, 3, 4, 5
   4. D-1, 0, 6, 2, 3, 4
5. 5What will be the output of the program ?
   #include<stdio.h>
   
   int main()
   {
   enum status {pass, fail, absent};
   enum status stud1, stud2, stud3;
   stud1 = pass;
   stud2 = absent;
   stud3 = fail;
   printf("%d %d %d\n", stud1, stud2, stud3);
   return 0;
   }
   

   1. A0, 2, 1
   2. B0, 1, 2
   3. C1, 2, 3
   4. D1, 3, 2

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Test sobre Sin título, creado por saisuhruth el 26/01/2016.

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saisuhruth

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