fix: make hw2 code compileable

hw2/src/main.c

@@ -3,5 +3,5 @@
 extern int original_main(int argc, const char *const *argv);
 
 int main(int argc, const char *const *argv) {
-    original_main(argc, argv);
+    return original_main(argc, argv);
 }

hw2/src/par.c

@@ -213,6 +213,7 @@ static void setdefaults(
   numlines = line - inlines;
 
   if (*pprefix < 0)
+  {
     if (numlines <= *phang + 1)
       *pprefix = 0;
     else {
@@ -224,8 +225,10 @@ static void setdefaults(
       }
       *pprefix = end - start;
     }
+  }
 
   if (*psuffix < 0)
+  {
     if (numlines <= 1)
       *psuffix = 0;
     else {
@@ -241,6 +244,7 @@ static void setdefaults(
       while (end - start >= 2 && isspace(*start) && isspace(start[1])) ++start;
       *psuffix = end - start;
     }
+  }
 }
 
 
@@ -257,7 +261,7 @@ static void freelines(char **lines)
 }
 
 
-main(int argc, const char * const *argv)
+int original_main(int argc, const char * const *argv)
 {
   int width, widthbak = -1, prefix, prefixbak = -1, suffix, suffixbak = -1,
       hang, hangbak = -1, last, lastbak = -1, min, minbak = -1, c;
@@ -333,8 +337,8 @@ parcleanup:
 
   if (*errmsg) {
     fprintf(stderr, "%.163s", errmsg);
-    exit(EXIT_FAILURE);
+    return(EXIT_FAILURE);
   }
 
-  exit(EXIT_SUCCESS);
+  return(EXIT_SUCCESS);
 }

hw2/src/reformat.c

@@ -12,6 +12,7 @@
 #include "buffer.h"    /* Also includes <stddef.h>.                       */
 #include "errmsg.h"
 
+#include <stdio.h>
 #include <stdlib.h>
 #include <ctype.h>
 #include <string.h>
@@ -192,7 +193,7 @@ char **reformat(const char * const *inlines, int width,
     for (end = *line;  *end;  ++end);
     if (end - *line < affix) {
       sprintf(errmsg,
-              "Line %d shorter than <prefix> + <suffix> = %d + %d = %d\n",
+              "Line %ld shorter than <prefix> + <suffix> = %d + %d = %d\n",
               line - inlines + 1, prefix, suffix, affix);
       goto rfcleanup;
     }