RosettaCodeData/Task/Rock-paper-scissors/C/rock-paper-scissors-2.c
2015-02-20 00:35:01 -05:00

103 lines
2.4 KiB
C

#include <stdio.h> // Standard IO
#include <stdlib.h> // other stuff
#include <time.h>
#include <string.h>
//This should add weighted random function to "The Elite Noob"'s code, stolen from above code because it does calculation so well
//closest I could make it to original but without pointless attempt to make code look smaller than above code by putting code on the same lines
int rand_i(int n)
{
int rand_max = RAND_MAX - (RAND_MAX % n);
int ret;
while ((ret = rand()) >= rand_max);
return ret/(rand_max / n);
}
int weighed_rand(int *tbl, int len)
{
int i, sum, r;
for (i = 0, sum = 0; i < len; sum += tbl[i++]);
if (!sum) return rand_i(len);
r = rand_i(sum) + 1;
for (i = 0; i < len && (r -= tbl[i]) > 0; i++);
return i;
}
int main(int argc, const char *argv[])
{
char umove[10], cmove[10], line[255];
int user, comp;
int tbl[]={0,0,0};
int tbllen=3;
printf("Hello, Welcome to rock-paper-scissors\nBy The Elite Noob\n");
mainloop:
while(1)
{ // infinite loop :)
printf("\n\nPlease type in 1 for Rock, 2 For Paper, 3 for Scissors, 4 to quit\n");
srand(time(NULL));
comp = (weighed_rand(tbl, tbllen) + 1) % 3;
fgets(line, sizeof(line), stdin);
while(sscanf(line, "%d", &user) != 1) //1 match of defined specifier on input line
{
printf("You have not entered an integer.\n");
fgets(line, sizeof(line), stdin);
}
if( (user > 4) || (user < 1) )
{
printf("Please enter a valid number!\n");
continue;
}
switch (comp)
{
case 1 :
strcpy(cmove, "Rock");
break;
case 2 :
strcpy(cmove, "Paper");
break;
case 3 :
strcpy(cmove, "Scissors");
break;
default :
printf("Computer Error, set comp=1\n");
comp=1;
strcpy(cmove, "Rock");
break;
}
switch (user)
{
case 1 :
strcpy(umove, "Rock");
break;
case 2 :
strcpy(umove, "Paper");
break;
case 3 :
strcpy(umove, "Scissors");
break;
case 4 :
printf("Goodbye! Thanks for playing!\n");
return 0;
default :
printf("Error, user number not between 1-4 exiting...");
goto mainloop;
}
if( (user+1)%3 == comp )
{
printf("Comp Played: %s\nYou Played: %s\nSorry, You Lost!\n", cmove, umove);
}
else if(comp == user)
{
printf("Comp Played: %s\nYou Played: %s\nYou Tied :p\n", cmove, umove);
}
else
{
printf("Comp Played: %s\nYou Played: %s\nYay, You Won!\n", cmove, umove);
}
tbl[user-1]++;
}
}