move to using getc

src/extra/chc/chc.c

@@ -3,10 +3,9 @@
 
 int chc(FILE* fp)
 {
-    char c[1];
+    register int c;
     int num_chars = 0;
-	  int fn = fileno(fp);
+    while ((c = getc(fp)) != EOF) {
-    while (read(fn, c, sizeof(c)) > 0) {
 			num_chars ++;
     }
     printf("%i\n", num_chars);

src/extra/lc/lc.c

@@ -3,14 +3,14 @@
 
 int lc(FILE* fp)
 {
-    char c[1];
     int num_lines = 0;
-	  int fn = fileno(fp);
+    register int c;
-    while (read(fn, c, sizeof(c)) > 0) {
+    while ((c = getc(fp)) != EOF) {
-        if (*c == '\n' ) {
+        if (c == '\n' ) {
 					num_lines ++;
         }
     }
+		// num_lines += (c != '\n');  // < judgment call, adds a line if the last line isn't followed by a newline.
     printf("%i\n", num_lines);
     return 0;
 }

src/wc.c

@@ -3,13 +3,10 @@
 
 int wc(FILE* fp)
 {
-    char c[1];
+    register int c;
     int word = 0, num_words = 0;
-	  int fn = fileno(fp);
+    while ((c = getc(fp)) != EOF) {
-    while (read(fn, c, sizeof(c)) > 0) {
+        if (c != ' ' && c != '\n' && c != '\t') {
-			// could add error checking to that read call
-			// could also use getc or fgetc instead of read.
-        if (*c != ' ' && *c != '\n' && *c != '\t') {
             word = 1;
         } else {
             if (word) {
@@ -33,7 +30,11 @@ int main(int argc, char** argv)
             perror("Could not open file");
             return 1;
         }
-				return wc(fp) && fclose(fp);
+				int wc_status = wc(fp);
+				int fclose_status = fclose(fp);
+				return (wc_status == 0) && (fclose_status ==0);
+				// can't do return wc_status == 0 && fclose_status == 0;
+				// because then if wc returns with -1, fclose is not called.
     } else {
         printf("Usage: wc file.txt\n");
         printf("   or: cat file.txt | wc\n");