Rock-paper-scissors: Difference between revisions

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@@ Line 771: / Line 771: @@
 #include <time.h>
 #include <string.h>
-int main(int argc, const char *argv[]){
+//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 :)
+	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));
-		int user, comp = (rand()%3)+1;
+		comp = (weighed_rand(tbl, tbllen) + 1) % 3;
-		char line[255];
 		fgets(line, sizeof(line), stdin);
-		while(sscanf(line, "%d", &user) != 1) { //1 match of defined specifier on input line
+		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 != 1 && user != 2 && user != 3  && user != 4){printf("Please enter a valid number!\n");continue;}
+		if( (user > 4) || (user < 1) )
+		{
-		char umove[10], cmove[10];
+			printf("Please enter a valid number!\n");
-		if(comp == 1){strcpy(cmove, "Rock");}else if(comp == 2){strcpy(cmove, "Paper");}else{strcpy(cmove, "Scissors");}
+			continue;
-		if(user == 1){strcpy(umove, "Rock");}else if(user == 2){strcpy(umove, "Paper");}else{strcpy(umove, "Scissors");}
+		}
-		if(user == 4){printf("Goodbye! Thanks for playing!\n");break;}
+		switch (comp)
-		if((comp == 1 && user == 3)||(comp == 2 && user == 1)||(comp == 3 && user == 2)){
+		{
+			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){
+		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\nYou Tied :p\n", cmove, umove);
+		}
+		else
+		{
 			printf("Comp Played: %s\nYou Played: %s\nYay, You Won!\n", cmove, umove);
+		}
-	}}return 1;}
+		tbl[user-1]++;
+	}
+}
 </lang>