NCERT Solutions Class 12 Computer Science Data File Handling

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NCERT Solutions Class 12 Computer Science Data File Handling. NCERT book for Computer Science in class 12 is strongly recommened by teachers and the CBSE and NCERT boards. Please download the NCERT solutions for class 12 Computer Science free in PDF made by teachers of the best schools in India. These solutions are carefully compiled to give detailed understanding of the concepts and also steps of solutions. The NCERT solutions are free to download in pdf format. Please refer to the download link below to download the pdf file and also refer to other chapters and subjects to get the solutions to Computer Science NCERT book questions and exercises.

Chapter - Data File Handling

Question 1. Write a user defined function word_count() in C+ + to count how many words are present in a text file named “opinion.txt”. For Example, if the file opinion.txt contains following text: Co-education system is necessary for a balanced society. With co-education system. Girls and Boys may develop a feeling of mutual respect towards each other.

The function should display the following: Total number of words present in the text file are:24

Answer:

void word_count ()

{

ifstream i;char ch[20];int c=0;

i.open("opinion.txt"); while(!i.eof())

{

i>>ch;

C=C+1;

}

cout<<"Total number of words present in the text file are: "<<c;

}

Question 2. Write a function in C + + to count and display the no of three letter words in the file “VOWEL.TXT”.

Example:

If the file contains:

A boy is playing there. I love to eat pizza. A plane is in the sky.

Then the output should be : 4

Answer:

#include

#include

void wordcount()

{ char word[80];

int cnt=0;

ifstream fl;

f1.open("VOWEL.TXT");

while (fl>>word)

{

if (strlen(word) == 3)

{

cnt++;

cout<<word<<endl;

}

}

cout<<" number of three letter words = ”<<cnt;

f1.close();

}

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