How do I read in 1000 characters from the console using C++?
UPDATE from comment on answer: "What i want is that the user can input a paragraph ( say 500 or 300 characters)" - i.e. not always 1000 characters
With the following code, I am only able to input up to a limit( around two lines). What am I doing wrong?
#include<iostream.h>
#include<stdio.h>
#include<conio.h>
#include <stdlib.h>
void main()
{
char cptr[1000];
cout<<"Enter :" ;
gets(cptr);
getch();
}
Hope this helps:
#include<iostream>
using namespace std;
int main()
{
const int size = 1000;
char str[size];
cout << "Enter: " ;
cin.read(str, size);
cout << str << endl;
}
using namespace std; is pretty much standard in c++.
Use getchar to read one character at a time in for loop as below:
int i;
for (i = 0; i < 1000; i++){
cptr[i] = getchar();
}
EDIT: If you want to break the loop early e.g. on new line char then:
int i;
for (i = 0; i < 1000; i++){
char c = getChar();
if(c == '\n'){
break;//break the loop if new line char is entered
}
cptr[i] = c;
}
i once it goes inside if. This will tell us, if it entered in the if block? Also, after the for loop, again add the cout to print value of i to know, how many times it ran?This is likely due to the fact that you're reading a new line. gets(char* ptr) stops reading when you encounter a new line, and appends terminating character to the string.
gets in a loop until all the input is consumed. On each subsequent call set the pointer to the strings end plus one.cin.read. Assuming you can use iostream it is probably much simpler.Here is a solution to user can input a paragraph ( 1000, 500 or 300 characters).
code:
#include <iostream>
using namespace std;
int main()
{
char ch;
int count = 0;
int maxCharacters=0;
char words[1024]={' '};
cout<<"Enter maxCharacters 300,500,1000 >";
cin>>maxCharacters;
cout << "\nProceed to write chars, # to quit: \n";
cin.get(ch);
while( (ch != '#') )
{
cin.get(ch); // read next char on line
++count; // increment count
words[count]=ch;
cout <<words[count]; // print input
if (count>= maxCharacters) break;
}
cout << "\n\n---------------------------------\n";
cout << endl << count << " characters read\n";
cout << "\n---------------------------------\n";
for(int i=0;i<count;i++) cout <<words[i];
cout << "\n"<< count << " characters \n";
cout<<" \nPress any key to continue\n";
cin.ignore();
cin.get();
return 0;
}
Output:
Enter maxCharacters 300,500,1000 >10
Proceed to write chars, # to quit:
The pearl is in the river
The pearl
---------------------------------
10 characters read
---------------------------------
The pearl
10 characters
Press any key to continue
<iostream.h>is for ancient versions of C++ only. You should not use it. Include<iostream>instead.