02-vars-and-math.c

@@ -4,8 +4,6 @@
 #define  UPPER  300
 #define  STEP   20
 
-float convert(int f);
-
 /* print Fahrenheit-Celsius table */
 int main()
 {
@@ -13,10 +11,5 @@ int main()
 
 	printf("Fahrenheit\tCelsius\n=======================\n");
 	for (fahr = UPPER; fahr >= LOWER; fahr = fahr - STEP)
-		printf("%3d\t\t%7.1f\n", fahr, convert(fahr));
-}
-
-float convert(int fahr)
-{
-	return (5.0/9.0)*(fahr-32);
+		printf("%3d\t\t%7.1f\n", fahr, (5.0/9.0)*(fahr-32));
 }

13-functions.c

@@ -1,24 +0,0 @@
-#include <stdio.h>
-
-int power(int m, int n);
-
-/* test power function */
-int main()
-{
-	int i;
-
-	for (i = 0; i < 10; ++i)
-		printf("%d %d %d\n", i, power(2,i), power(-3,i));
-	return 0;
-}
-
-/* power: raise base to n-th power; n >= 0 */
-int power(int base, int n)
-{
-	int i, p;
-
-	p = 1;
-	for (i = 1; i <= n; ++i)
-		p = p * base;
-	return p;
-}

14-char-arrays.c

@@ -1,49 +0,0 @@
-#include <stdio.h>
-#define MAXLINE 1000 /* maximum input line size */
-
-int getline(char line[], int maxline);
-void copy(char to[], char from[]);
-
-/* print longest input line */
-main()
-{
-	int len;
-	int max;
-	char line[MAXLINE];
-	char longest[MAXLINE];
-
-	max = 0;
-	while((len = getline(line, MAXLINE)) > 0)
-		if (len > max) {
-			max = len;
-			copy(longest, line);
-		}
-	if (max > 0)
-		printf("%s", longest);
-	return 0;
-}
-
-/* getline: read a line into s, return length */
-int getline(char s[], int lim)
-{
-	int c, i;
-
-	for (i=0; i<lim-1 && (c=getchar())!=EOF && c!='\n'; ++i)
-		s[i] = c;
-	if (c == '\n') {
-		s[i] = c;
-		++i;
-	}
-	s[i] = '\0';
-	return i;
-}
-
-/* copy: copy 'from' into 'to': assume to is big enough */
-void copy(char to[], char from[])
-{
-	int i;
-
-	i = 0;
-	while ((to[i] = from[i]) != '\0')
-		++i;
-}

Makefile

@@ -4,7 +4,7 @@ OBJS = $(patsubst %.c,bin/%,$(wildcard *.c))
 all: $(OBJS)
 
 $(OBJS):
-	$(CC) -o ./$@ $(patsubst bin/%,%.c,$@) -ansi
+	$(CC) -o ./$@ $(patsubst bin/%,%.c,$@)
 
 clean:
 	$(RM) ./bin/*