void encryptstr(char str[]);

int main()
{
	char mystring[] = "P:\\Abin cnfgn\\ncvzbavgbe-k64.rkr";

	encryptstr(mystring);

	printf("Original string: ");
	puts(mystring);

	system("pause");

	return 0;
}


void encryptstr(char str[]){
	int i;

	for(i=0; str[i] != '\0'; i++ ){
    if(str[i] >= 'a' && str[i] <= 'm'){
        str[i] += 13;
    }

    else if(str[i] > 'm' && str[i] <= 'z'){
        str[i] -= 13;
    }

    else if (str[i] >= 'A' && str[i] <= 'M'){
        str[i] += 13;
    }

    else if(str[i] > 'M' && str[i] <= 'Z'){
        str[i] -= 13;
    }

}
}