void func(char * str)
{
char buff[16];
strcpy(buff,str);
}
void main(int argc, char * argv[])
{
int check = 1;
func(argv);
if(check == 1)
{
printf(“check should be 1 (%d)\n”,check);
} else
{
Printf(“check should not be 1 (%d)\n”,check);
}
}

#include<stdio.h>
#include<stdlib.h>
#include<string.h>

#define CONSTANT 2

int main( int argc, char** argv )
{
	int unused = CONSTANT;
	char buffer[ CONSTANT ];
	if( argc != 2 )
	{
		printf( "Overflow This!\n" );
		printf( "Usage: %s <text>\n", *argv );
		return EXIT_FAILURE;
	}
	strncpy( buffer, argv[ 1 ], sizeof( buffer ) );
	buffer[ sizeof( buffer ) - 1 ] = 0; 
	printf( "Unused = %d, Buffer: '%s'\n", unused, buffer );	
	return EXIT_SUCCESS;
}