216. What is the use of no linkage?

1. 1. make the entity visible to other blocks in the same program.

   
   
   

   2. make the entity visible only to that block

   
   
   

   3. make the entity visible to other programs

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   make the entity visible only to that block

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217. Which is used to use a function from one source file to another?

1. 1. declaration

   
   
   

   2. prototype

   
   
   

   3. code

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   By defining a function’s prototype in another file means, we can inherit all the features from the source function.

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218. To use external linkage we have to use which keyword?

1. 1. extern

   
   
   

   2. const

   
   
   

   3. static

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   Extern keyword is used to represent identifiers from other programs.

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219. What is the default type of linkage that is available for identifiers?

1. 1. no linkage

   
   
   

   2. internal

   
   
   

   3. external

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   external

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220. What will be the output of these two programs?
     (i)
     

     #ifndef Example_H
         #define Example_H
         int n = 251;
         #endif
     

     
     (ii)
     

     #include 
         #include "Example.h"
         using namespace std;
         int main(int argc, char * argv[] )
         {
             cout << num++;
             return 0;
         }
     

1. 1. 252

   
   
   

   2. 251

   
   
   

   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: B

   In this program, we have created a header file and linked that into the source program and we post incrementing that because of that it is printed as 251.

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