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With few changes you can improve the code. You need to replace gets() and strcmp() with the similar ones bur more safe.
I need help with the strcmp portion.
*/
#include <stdio.h>
#include <string.h>
int main(void)
{
char buffer[4];
int pass_flag = 0;
printf(“n Enter the password : n”);
gets(buffer);
if(strcmp(buffer, “pswd”))
{
printf (“n Wrong Password n”);
}
else
{
printf (“n Correct Password n”);
pass_flag = 1;
}
if(pass_flag)
{
/* Now Give root or admin rights to user*/
printf (“n Root privileges given to the user n”);
}
return 0;
}
Expert Answer
#include <string.h>
int main(void)
{
char buffer[4];
int pass_flag = 0;
printf(“n Enter the password : n”);
//gets(buffer);
scanf(“%s”,buffer);
if(strncmp(buffer, “pswd”,strlen(“pswd”)))
{
printf (“n Wrong Password n”);
}
else
{
printf (“n Correct Password n”);
pass_flag = 1;
}
if(pass_flag)
{
/* Now Give root or admin rights to user*/
printf (“n Root privileges given to the user n”);
}
return 0;
}
OUTPUT:
Enter the password :
pswd
Correct Password
Root privileges given to the user
Note:
strncmp you can limit the search, so that it doesn’t reach non-accessible memory.
