Hello World!
i want to write a program that generates 100 random numbers.
the program should do the following tasks:
** store these 100 random numbers in a file called totalFile.txt
** read these numbers one by one from totalFile.txt and store the even numbers in a file called evenFile.txt and the odd numbers in a file called oddFile.txt.
** finally display the contents of the files evenFile.txt and oddFile.txt to the screen.
Can any one help me!?
Thanks in advance!
>Can any one help me!?
Yes, where are you having problems with?
BTW, Could you post your own try as well ?
One step at a time. Build your RNG and write the ASCII strings to your text file.
Once that works,
Then load them one at a time.
then finally organizing, and resave to files.
About generating random numbers, you should definitely take a look at:
:)
Hello World!
i want to write a program
awesome!
Can any one help me!?
sure can!
Thanks in advance!
you're welcome!
.
edit lol I realized I was wrong.
Here is what i have tried. But it kept saying segmentation fault!
#include<stdio.h>
int main()
{
int in[10];
int out[10];
int i;
FILE *fp;
fp=fopen("totalFile.txt","w");
if(fp==NULL)
printf("Error\n");
for(i=0; i<10; i++)
{
in[i]=rand();
fprintf(fp,"%d\n",in[i]);
}
fclose(fp);
fp=fopen("totalFile.txt","r");
if(fp=NULL)
printf("Error\n");
i=0;
while(i<10)
{
fscanf(fp,"%d",&out[i]);
i++;
}
return 0;
}Look at line 18: if(fp=NULL) , you assign the value NULL to a pointer, using a NULL pointer is a very dangerous thing to do, you probably meant: if(fp=[B]=[/B]NULL) :)
if(fp==NULL) // changed assignment to comparison
printf("Error\n");Hope this helps!
Edit:: What you need is a good code formatting guide, like this one or AStyle, a program which automatically formats your code...
Here is what i have tried. But it kept saying segmentation fault!
#include<stdio.h>
int main()
{
int in[10];
int out[10];
int i;
FILE *fp;
fp=fopen("totalFile.txt","w");
if(fp==NULL)
printf("Error\n");
for(i=0; i<10; i++)
{
in[i]=rand();
fprintf(fp,"%d\n",in[i]);
}
fclose(fp);
fp=fopen("totalFile.txt","r");
if(fp=NULL)
printf("Error\n");
i=0;
while(i<10)
{
fscanf(fp,"%d",&out[i]);
i++;
}
return 0;
}Oh! Thanks a lot!it really helped me!
So, what's stopping you from marking this thread as solved?
this is the answere:
#include <iostream>
#include <cstdlib>
#include <cstdio>
#include <windows.h>
#include <time.h>
#include <fstream.h>
using namespace std;
int main()
{
int a=100;
int random;
srand(time(0));
while(a) {
random = rand() % 99 + 1;
if(random%2 !=0) {
ofstream randomN("oddFile.txt", ios::app);
randomN << random << endl;
} else {
ofstream randomN2("evenFile.txt", ios::app);
randomN2 << random << endl;
}
cout << random << endl;
--a;
}
system("pause");
return 0;
}well this is c++, thought you asked for it sorry...
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