C Programming Questions and Answers on Goto & Labels for Freshers

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1. What is the output of the code given below?

  1.     #include 
  2.     int main()
  3.     {
  4.         printf("%d ", 1);
  5.         goto l1;
  6.         printf("%d ", 2);
  7.         l1:goto l2;
  8.         printf("%d ", 3);
  9.         l2:printf("%d ", 4);
  10.    }
a) 1 4
b) Compilation error
c) 1 2 4
d) 1 3 4
Answer: a
2. What is the output of code given below?

  1.     #include 
  2.     int main()
  3.     {
  4.         printf("%d ", 1);
  5.         l1:l2:
  6.         printf("%d ", 2);
  7.         printf("%d\n", 3);
  8.     }
a) Compilation error
b) 1 2 3
c) 1 2
d) 1 3
Answer: b
3. What is the output of code given below?
  1.     #include 
  2.     int main()
  3.     {
  4.         printf("%d ", 1);
  5.         goto l1;
  6.         printf("%d ", 2);
  7.     }
  8.     void foo()
  9.     {
  10.         l1 : printf("3 ", 3);
  11.     }
a) 1 2 3
b) 1 3
c) 1 3 2
d) Compilation error
Answer: d
4. What is output of code given below?

  1.     #include 
  2.     int main()
  3.     {
  4.         int i = 0, j = 0;
  5.         while (i < 2)
  6.         {
  7.             l1 : i++;
  8.             while (j < 3)
  9.             {
  10.                 printf("Loop\n");
  11.                 goto l1;
  12.             }
  13.         }
  14.     }
a) Loop Loop
b) Compilation error
c) Loop Loop Loop Loop
d) Infinite Loop

Answer: d
5. What is the output of code given below?
  1.     #include 
  2.     int main()
  3.     {
  4.         int i = 0, j = 0;
  5.         while (l1: i < 2)
  6.         {
  7.             i++;
  8.             while (j < 3)
  9.             {
  10.                 printf("loop\n");
  11.                 goto l1;
  12.             }
  13.         }
  14.     }
a) loop loop
b) Compilation error
c) loop loop loop loop
d) Infinite loop
Answer: b
6. What is the output of the code given below?
  1.     #include 
  2.     int main()
  3.     {
  4.         int i = 0, j = 0;
  5.         l1: while (i < 2)
  6.         {
  7.             i++;
  8.             while (j < 3)
  9.             {
  10.                 printf("loop\n");
  11.                 goto l1;
  12.             }
  13.         }
  14.     }
a) loop loop
b) compilation error
c) oop loop loop loop
d) infinite loop
Answer: a
7. The output of the code below is
  1.     #include 
  2.     void main()
  3.     {
  4.         int i = 0;
  5.         if (i == 0)
  6.         {
  7.             goto label;
  8.         }
  9.         label: printf("Hello");
  10.     }
a) Nothing
b) Error
c) Infinite Hello
d) Hello
Answer: d
8. The output of the code below is
  1.     #include 
  2.     void main()
  3.     {
  4.         int i = 0, k;
  5.         if (i == 0)
  6.             goto label;
  7.             for (k = 0;k < 3; k++)
  8.             {
  9.                 printf("hi\n");
  10.                 label: k = printf("%03d", i);
  11.             }
  12.     }
a) 0
b) hi hi hi 0 0 0
c) 0 hi hi hi 0 0 0
d) 0 0 0
Answer: a
9. The output of the code below is
  1.     #include 
  2.     void main()
  3.     {
  4.         int i = 0, k;
  5.         label: printf("%d", i);
  6.         if (i == 0)
  7.             goto label;
  8.     }
a) 0
b) Infinite 0
c) Nothing
d) Error
Answer: b
10. What is the output of this C code?

  1.     #include 
  2.     void main()
  3.     {
  4.         int i = 5, k;
  5.         if (i == 0)
  6.             goto label;
  7.             label: printf("%d", i);
  8.             printf("Hey");
  9.     }
a) 5
b) Hey
c) 5 Hey
d) Nothing
Answer: c
11. goto can be used to jump from main to within a function

a) true
b) false
c) depends
d) varies
Answer: b
12. What is the output of this C code?

  1.     #include 
  2.     int main()
  3.     {
  4.         printf("%d ", 1);
  5.         goto l1;
  6.         printf("%d ", 2);
  7.         l1:goto l2;
  8.         printf("%d ", 3);
  9.         l2:printf("%d ", 4);
  10.    }
a) 1 4
b) Compile time error
c) 1 2 4
d) 1 3 4
Answer: a
13. What is the output of this C code?

  1.     #include 
  2.     int main()
  3.     {
  4.         printf("%d ", 1);
  5.         l1:l2:
  6.         printf("%d ", 2);
  7.         printf("%d\n", 3);
  8.     }
a) Compile time error
b) 1 2 3
c) 1 2
d) 1 3
Answer: b
14. What is the output of this C code?

  1.     #include 
  2.     int main()
  3.     {
  4.         printf("%d ", 1);
  5.         goto l1;
  6.         printf("%d ", 2);
  7.     }
  8.     void foo()
  9.     {
  10.         l1: printf("3 ", 3);
  11.     }
a) 1 2 3
b) 1 3
c) 1 3 2
d) Compile time error
Answer: d
15. What is the output of this C code?

  1.     #include 
  2.     int main()
  3.     {
  4.         int i = 0, j = 0;
  5.         while (i < 2)
  6.         {
  7.             l1: i++;
  8.             while (j < 3)
  9.             {
  10.                 printf("loop\n");
  11.                 goto l1;
  12.             }
  13.         }
  14.    }
a) loop loop
b) Compile time error
c) loop loop loop loop
d) Infinite loop
Answer: d
16. What is the output of this C code?

  1.     #include 
  2.     int main()
  3.     {
  4.         int i = 0, j = 0;
  5.         while (l1: i < 2)
  6.         {
  7.             i++;
  8.             while (j < 3)
  9.             {
  10.                 printf("loop\n");
  11.                 goto l1;
  12.             }
  13.         }
  14.    }
a) loop loop
b) Compile time error
c) loop loop loop loop
d) Infinite loop
Answer: b
17. What is the output of this C code?

  1.     #include 
  2.     int main()
  3.     {
  4.         int i = 0, j = 0;
  5.         l1: while (i < 2)
  6.             {
  7.                 i++;
  8.                 while (j < 3)
  9.                 {
  10.                     printf("loop\n");
  11.                     goto l1;
  12.                 }
  13.             }
  14.    }
a) loop loop
b) Compile time error
c) loop loop loop loop
d) Infinite loop
Answer: a
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