amcat automata fix question and answer

amcat automata fix question and answer

In this post, you will find amcat automata mock test which will consist of automata fix questions in amcat.

Number of Questions: 7

Module Duration: 20 minutes

Detailed Syllabus:

Basic programming

Control Structures

conditional statements

Linear data structures

Advanced data structures

Sorting and searching algorithms

Sample Question:

1) Find the error in the below code without modifying the logic.

Expected output:
choice is 2

#include
void main()
{
   float x = 2.2; 
   switch (x)
   {
       case 2: printf("Choice is 2");
                 break;
       default: printf("Invalid choice");
                break;
   }
}

Answer:

#include
void main()
{
   int x = 2;  //rectifying syntax error
   switch (x)
   {
       case 2: printf("Choice is 2");
                 break;
       default: printf("Invalid choice");
                break;
   }
}

The expression used in the switch must be an integral type (int, char, and enum). Any other type of expression is not allowed.

2) Find the logical error in the below code.

expected output:
1 1 1 1 1 1
2 2 2 2 2
3 3 3 3
4 4 4
5 5
6

void main () {
  int i, j, n = 6;
  for(i=1; i<=n; i++)
  {
for(j=1;j<=n;j++);
{
        printf("%d", i);
}
printf("\n");
  }
}

if we will execute the above program we will get this output:

1 1 1 1 1 1

2 2 2 2 2 2

3 3 3 3 3 3

4 4 4 4 4 4

5 5 5 5 5 5
6 6 6 6 6 6

Solution:

void main () {
  int i, j, n = 6;
  for(i=1; i<=n; i++)
  {
  for(j=i;j<=n;j++)
{
printf("%d", i);
   }
    printf("\n");
  }
}

3) Complete the given program to get the output as below.

./hello

output: hello, world

./hello Ram

output: hello, Ram

./hello Ram Rahim

output: hello, Ram and Rahim

Where program name is hello and ./hello is a command to compile the program.

#include <cs50.h> #include <stdio.h> 
int main(int argc, string argv[])
{
    if (argc == 2)
    {
        printf("hello, %s\n", argv[1]);
    }

    else if(?) {  printf("hello, %s and %s\n", ?,?);  }

    else
    {
        printf("hello, world\n");
    }
}

Solution:

#include <cs50.h> #include <stdio.h> 
int main(int argc, string argv[])
{
    if (argc == 2)
    {
        printf("hello, %s\n", argv[1]);
    }

    else if(argc == 3) {  printf("hello, %s and %s\n", argv[1], argv[2]);  }

    else
    {
        printf("hello, world\n");
    }
}

• Here argc means number of argument.

1. for command:  ./hello  (argc is 1)
2. for command:  ./hello Ram  (argc is 2) 
3. for command:  ./hello Ram  Rahim (argc is 3) 

• Here argv is an argument vector.

1. for command: ./hello Ram Rahim  
2. (argv[0] contain the compilation command)
3. here, argv[0] is ./hello, argv[1] is Ram and argv[2] is Rahim.

Amcat Automata Fix Basic Programming click here>>