Dec 19, 2012

C Aptitude Questions and answers with explanation

C Aptitude 29
C program is one of most popular programming language which is used for core level of coding across the board. C program is used for operating systems, embedded systems, system engineering, word processors,hard ware drivers, etc.

In this site, we have discussed various type of C programs till date and from now on, we will move further by looking at the C aptitude questions.

In the coming days, we will post C aptitude questions, answers and explanation for interview preparations.

The C aptitude questions and answers for those questions along with explanation for the interview related queries.

We hope that this questions and answers series on C program will help students and freshers who are looking for a job, and also programmers who are looking to update their aptitude on C program.
Some of the illustrated examples will be from the various companies, and IT industry experts.
Read more about C Programming Language . and read the C Programming Language (2nd Edition). by K and R.
Predict the output or error(s) for the following:


C aptitude 29.1
  enum colors {BLACK,BLUE,GREEN}
main()
{
    
    printf("%d..%d..%d",BLACK,BLUE,GREEN);
    
    return(1);
}

Answer: 0..1..2

Explanation: enum assigns numbers starting from 0, if not explicitly defined.

C aptitude 29.2
   void main()
{
    char far *farther,*farthest;
    
    printf("%d..%d",sizeof(farther),sizeof(farthest));
    
}


Answer: 4..2

Explanation: The second pointer is of char type and not a far pointer

C aptitude 29.3
     main()
{
    int i=400,j=300;
    printf("%d..%d");
}

Answer: 400..300

Explanation: printf takes the values of the first two assignments of the program. Any number of printf's may be given. All of them take only the first two.

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