Assignment 12: File Handling - Text File SOLUTION

File Handling - Text File 
[SET – 1]

1	Write a C++ program to write number 1 to 100 in a data file NOTES.TXT.  #include<fstream.h> int main() { ofstream fout; fout.open("NOTES.TXT"); for(int i=1;i<=100;i++) fout<<i<<endl; fout.close(); return 0; }
2	Write a C++ program, which initializes a string variable to the content "Time is a great teacher but unfortunately it kills all its pupils. Berlioz" and outputs the string to the disk file OUT.TXT. you have to include all the header files if required.  #include<fstream.h> int main() { ofstream fout; fout.open("out.txt"); char str[300]="Time is a great teacher but unfortunately it kills all its pupils. Berlioz"; fout<<str; fout.close(); return 0; }
3	Write a user-defined function in C++ to read the content from a text file OUT.TXT, count and display the number of alphabets present in it void alphabets() { ifstream fin; fin.open("out.txt"); char ch; int count=0; while(!fin.eof()) { fin.get(ch); if(isalpha(ch)) count++; } cout<<"Number of alphabets in file are "<<count; fin.close(); }
4	Write a function to count the number of blank present in a text file named "OUT.TXT".  void blankspace() { ifstream fin; fin.open("out.txt"); char ch; int count=0; while(!fin.eof()) { fin.get(ch); if(ch==' ') count++; } cout<<"Number of blank spaces in file are "<<count; fin.close(); }
5	Write a function to count number of words in a text file named "OUT.TXT".  void countwords() { ifstream fin; fin.open("out.txt"); char word[30]; int count=0; while(!fin.eof()) { fin>>word; count++; } cout<<"Number of words in file are "<<count; fin.close(); }
6	Write a function in C++ to print the count of word the as an independent word in a text file STORY.TXT. for example, if the content of the file STORY.TXT is There was a monkey in the zoo. The monkey was very naughty. Then the ouput of the program should be 2. void countword() { ifstream fin; fin.open("STORY.TXT"); char word[30]; int count=0; while(!fin.eof()) { fin>>word; if(strcmpi(word,"the")==0) count++; } cout<<"Number of the word in file are "<<count; fin.close(); }
7	Write a function in C++ to count and display the number of lines not starting with alphabet 'A' present in a text file "STORY.TXT". Example: If the file "STORY.TXT" contains the following lines, The rose is red. A girl is playing there. There is a playground. An aeroplane is in the sky. Numbers are not allowed in the password. The function should display the output as 3.  void countlines() { ifstream fin; fin.open("STORY.TXT"); char str[80]; int count=0; while(!fin.eof()) { fin.getline(str,80); if(str[0]!='A') count++; } cout<<"Number of lines not starting with A are "<<count; fin.close(); }
8	Assuming that a text file named FIRST.TXT contains some text written into it, write a function named copyupper(), that reads the file FIRST.TXT and creates a new file named SECOND.TXT contains all words from the file FIRST.TXT in uppercase.  void copyupper() { ifstream fin; fin.open("FIRST.TXT"); ofstream fout; fout.open("SECOND.TXT"); char ch; while(!fin.eof()) { fin.get(ch); ch=toupper(ch); fout<<ch; } fin.close(); fout.close(); }
9	Assuming that a text file named FIRST.TXT contains some text written into it, write a function named vowelwords(), that reads the file FIRST.TXT and creates a new file named SECOND.TXT, to contain only those words from the file FIRST.TXT which start with a lowercase vowel (i.e., with 'a', 'e', 'i', 'o', 'u').  For example, if the file FIRST.TXT contains Carry umbrella and overcoat when it rains Then the file SECOND.TXT shall contain umbrella and overcoat it  void vowelwords() { ifstream fin; fin.open("FIRST.TXT"); ofstream fout; fout.open("SECOND.TXT"); char word[30]; while(!fin.eof()) { fin>>word; if(word[0]=='a'||word[0]=='e'||word[0]=='i'||word[0]=='o'||word[0]=='u') fout<<word<<" "; } fin.close(); fout.close(); }