Added a simple shell, jsh

2 files changed, 22 insertions, 23 deletions

diff --git a/src/cmd/coin/coin.c b/src/cmd/coin/coin.c
index c18d66c..4471959 100644
--- a/src/cmd/coin/coin.c
+++ b/src/cmd/coin/coin.c
@@ -4,61 +4,58 @@
 #include <string.h>
 #include <limits.h>
 
-unsigned long coinFlip (unsigned long times);
+int coinFlip (int times);
 
 int
 main (int argc, char *argv[])
 {
-	int nflag = 0, i, mflag = 0;
-	unsigned long times = 1, tails, heads;
+	int nflag = 0, times = 1, i, tails, heads;
+	float ph, pt;
 	argc--;
 
 	for (i = 1; i <= argc; i++) {
-		if (strcmp(argv[i], "-n") == 0)
+		if (strcmp(argv[i], "-n") == 0) {
 			nflag++;
-		else if (strcmp(argv[i], "-m") == 0) {
-			mflag++;
+		} else if (strcmp(argv[i], "-m") == 0) {
+			times = INT_MAX;
 			break;
-		} else if (nflag == 1)
+		} else if (nflag == 1) {
 			times = atoi(argv[i]);
 			if (times == 0) {
 				printf("Non Integer Value Inputted\n");
 				return -1;
 			}
+			break;
+		}
 	}
 
-	if (mflag == 1)
-		times = ULONG_MAX;
-
 	if (times == 1)
 		printf("%s\n", coinFlip(times) ? "Heads" : "Tails");
 	else {
 		tails = coinFlip(times);
 		heads = times - tails;
-		float ph = (float)heads/times, pt = (float)tails/times;
+		ph = (float)heads/times;
+		pt = (float)tails/times;
 
-		printf("Heads: %lu\nTails: %ld\nProb Heads: %f\nProb Tails: %f\n", heads, tails, ph, pt);
+		printf("Heads: %d\nTails: %d\nProb Heads: %f\nProb Tails: %f\n", heads, tails, ph, pt);
 	}
 
 	return 0;
 }
 
 /* coinFlip: Flips a coin n numbers of times and returns the number of tails */
-unsigned long 
-coinFlip (unsigned long times)
+int 
+coinFlip (int times)
 {
-	unsigned long tails, i;
-	int c;
+	int tails, i, c;
 	time_t t;
 	srand((unsigned) time(&t));
 
-	tails = 0;
-
-	for (i = 0; i < times; i++) {
+	for (i = tails = 0; i < times; i++) {
 		c = rand() % 2;
 		if (c == 1)
 			tails++;
 	}
 
 	return tails;
-}
\ No newline at end of file
+}
diff --git a/src/cmd/coin/makefile b/src/cmd/coin/makefile
index cf8289d..7cd5d6e 100644..100755
--- a/src/cmd/coin/makefile
+++ b/src/cmd/coin/makefile
@@ -1,10 +1,12 @@
-all: coin
+CFLAGS=-Wall -Werror
+
+build: coin
 	@cp coin $(PROROOT)/build/bin/coin
 
 coin: coin.c
-	$(CC) -o coin coin.c
+	$(CC) $(CFLAGS) -o coin coin.c
 
 clean:
 	@rm -r coin
 
-.PHONY: all clean
\ No newline at end of file
+.PHONY: build clean