OOPS - How do you write a program which produces its own source code as its output?

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How do you write a program which produces its own source code as its output?

Total Answers and Comments: 10

Last Update: March 14, 2007

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Submitted by:

Hi,

There are So many complex methods for that but i write the most effective and simple one just write this ..

// program name avi.c

#include<stdlib.h>

void main()

{ //// write ur program logic here

getch();

system("type avi.c");

}

by the use of this system function from stdlib.h u can run any dos command from ur c program but please check the output for this only by running the exe of ur program ( in this case avi.exe)

Regards ,

Avinash Chaturvedi( Avi )

Above answer was rated as good by the following members:
gunturi.prabhakar

June 27, 2005 05:02:37

abhijit

RE: How do you write a program which produces its own source code as its output?

can i get the ans fr the question
Question : How do you write a program which produces its own source code as its output?

Is this answer useful? Yes | No

July 16, 2005 00:02:55

Anjaneyulu

RE: How do you write a program which produces its own source code as its output?

/* Program to printf itself on console */
#include
int main(void)
{
FILE *in;
clrscr();
if ((in = fopen("8.c", "r")) == NULL)
{
printf("Cannot open input file.n");
return 1;
}
while (!feof(in))
printf("%c", fgetc(in));
fclose(in);
getche();
return 0;
}

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July 16, 2005 08:05:18

venu

RE: How do you write a program which produces its own source code as its output?

answer

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July 27, 2005 00:45:29

suhasini

RE: How do you write a program which produces its own source code as its output?

Howdoes return1 and return 0 differ?

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September 03, 2005 21:54:27

Santhanam

RE: How do you write a program which produces its own source code as its output?

'return 0' indicates program is ended with no error and 'return 1' indicates program is ended with error.

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September 12, 2005 09:03:06

Harish Kumar

How to write a program who prints itself.

#include<stdio.h>
#include<string.h>
#include<stdlib.h>
int main(int args,char **argv)
{
char filename[20];
int i=0,k=0;
FILE *in;

while(argv[0][i] != '\0')
if(argv[0][i++] == '\\')
k=i;
printf("%d",k);
for(i=0;argv[0][k] != '.';i++,k++)
{
filename[i] = argv[0][k];
}

filename[i] = '\0';
strcat(filename,".c");

if ((in = fopen(filename, "r")) == NULL)
{
printf("Cannot open input file.n");
return 1;
}
while (!feof(in))
printf("%c", fgetc(in));
fclose(in);
return 0;
}

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October 10, 2005 08:40:04

Sudhakar

RE: How do you write a program which produces its own ...

main() { char *a="main() { char *a=%c%s%c; char b='%c'; printf(a,b,a,b,b); }"; char b='"'; printf(a,b,a,b,b); }

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July 21, 2006 03:21:28

wasim

RE: How do you write a program which produces its own ...

#include<>

main()

{

FILE *p;

p=fopen("filename","r");

if(p==null)exit(1);

while(!eof(p))

{

printf("%c",*p);

p++;

}

getche();

}

Is this answer useful? Yes | No

August 03, 2006 08:06:22

RE: How do you write a program which produces its own ...

Hi,

There are So many complex methods for that but i write the most effective and simple one just write this ..

// program name avi.c

#include<stdlib.h>

void main()

{ //// write ur program logic here

getch();

system("type avi.c");

}

by the use of this system function from stdlib.h u can run any dos command from ur c program but please check the output for this only by running the exe of ur program ( in this case avi.exe)

Regards ,

Avinash Chaturvedi( Avi )

Is this answer useful? Yes | No

1 0

Overall Rating: +1

March 14, 2007 10:20:41

#10

Manoj

RE: How do you write a program which produces its own ...

All the solutions above are reading the source code with the files concepts.

find a solution where you do not have a source file to read the contents.

There is a macro or an attiribute which tells the compiler the name of the program, function or the attribute. You can use that to get the source code. try out...!!!

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