Rock Paper Scissors in C for #32

Rock_Paper_Scissors.c

@@ -0,0 +1,78 @@
+
+#include <stdio.h>
+#include <time.h>
+#include <stdlib.h>
+
+// 0 - Rock
+// 1 - Paper
+// 2 - Scissors
+int whoWon(int move1, int move2) {
+    int winner = 0;
+    if(move1 != move2) { // Otherwise is a tie
+        if(move1>move2) { // 1 beats 0, 2 beats 1
+            if(move1-move2<2) {
+                winner = 1;
+            } else {
+                winner = 2;
+            }
+        } else {
+            if(move2-move1<2) {
+                winner = 2;
+            } else {
+                winner = 1;
+            }
+        }
+    }
+    return winner;
+}
+
+int main(void)
+{
+    int play = 1;
+    srand(time(NULL));   // Initialization, should only be called once.
+    while(play == 1) {
+        printf("Hi! What's your move?\n");
+        int yourMove = -1;
+
+        printf("(R)ock\n");
+        printf("(P)aper\n");
+        printf("(S)cissors\n");
+
+        char move = getchar();
+        getchar(); // To skip \n
+
+        if(move == 'R') yourMove = 0;
+        if(move == 'P') yourMove = 1;
+        if(move == 'S') yourMove = 2;
+
+        if(yourMove != -1) {
+            int myMove = rand();
+
+            if(myMove%3 == 0) printf("I play Rock!\n");
+            if(myMove%3 == 1) printf("I play Paper!\n");
+            if(myMove%3 == 2) printf("I play Scissors!\n");
+
+            int winner = whoWon(yourMove, myMove);
+            if(winner == 0) printf("Its a tie!\n");
+            if(winner == 1) printf("You Win!\n");
+            if(winner == 2) printf("I Win!\n");
+
+        } else {
+            printf("Invalid move, please select a valid one.\n");
+        }
+
+        printf("Wanna play again?(y/n)");
+
+        char again = getchar();
+        getchar(); // To skip \n
+        printf("a%ca\n",again);
+
+        if(again == 'y') {
+            play = 1;
+        } else {
+            play = 0;
+        }
+    }
+    printf("Bye!\n");
+    return 0;
+}