main.c

@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <math.h>
 #include <unistd.h>
 #include <errno.h>
 #include <ctype.h>
@@ -18,16 +19,16 @@
 #define LOADS TiB * 9999
 
 void print_help();
-char* get_shorthand(unsigned long long int size);
+unsigned char* get_shorthand(unsigned long long int size);
 void adjust_by_denomination(unsigned long long int* size, char denomination);
-void* allocate_heap(unsigned long long int size, char silent);
+unsigned long long int* allocate_heap(unsigned long long int size, char silent);
 void save_heap(unsigned long long int* heap, unsigned long long int size, char* filename, char silent);
 
 int main(int argc, char* argv[]) {
 
         unsigned char flags = 0;
         unsigned long long int size = 0;
-    char* filename = NULL;
+        unsigned char* filename = NULL;
         unsigned char denominator = 0;
 
         int arg;
@@ -77,7 +78,7 @@ int main(int argc, char* argv[]) {
         }
 
         if (!(flags & BYTES_GIVEN)) {
-        fprintf(stderr, "argument -b is required!\n");
+                fprintf(stderr, "argument -b is required!\n", optopt);
                 print_help();
                 exit(1);
         }
@@ -85,7 +86,7 @@ int main(int argc, char* argv[]) {
         adjust_by_denomination(&size, denominator);
 
         // even if the user doesn't specify a denomination, it still would be nice to display a truncated amount if available.
-    char* shorthand = get_shorthand(size);
+        unsigned char* shorthand = get_shorthand(size);
         if (!(flags & SILENT) && !(flags & BYPASS_WARN)) {
                 if (shorthand) {
                         printf("you are about to allocate %s (%llu bytes) of heap memory. are you sure? (y/N)\n> ", shorthand, size);
@@ -98,7 +99,7 @@ int main(int argc, char* argv[]) {
                 while (getchar() != '\n');
         }
 
-    void* heap = allocate_heap(size, flags & SILENT);
+        unsigned long long int* heap = allocate_heap(size, flags & SILENT);
         if (filename != NULL) save_heap(heap, size, filename, flags & SILENT);
 
         if (!(flags & SILENT)) {
@@ -131,14 +132,14 @@ void print_help() {
         exit(0);
 }
 
-char* get_shorthand(unsigned long long int size) {
+unsigned char* get_shorthand(unsigned long long int size) {
         if (size < KiB) return 0;
 
         if (size > LOADS) {
                 return ">9999 TiB";
         }
 
-    char* buffer = malloc(sizeof(char) * 12);
+        unsigned char* buffer = malloc(sizeof(char) * 12);
 
         if (size >= TiB) {
                 snprintf(buffer, 12, "%.2f TiB", (float) size / TiB);
@@ -178,7 +179,7 @@ void adjust_by_denomination(unsigned long long int* size, char denomination) {
         }
 }
 
-void* allocate_heap(unsigned long long int size, char silent) {
+unsigned long long int* allocate_heap(unsigned long long int size, char silent) {
         if (!silent) {
                 printf("please wait.");
                 fflush(stdout);
@@ -187,8 +188,7 @@ void* allocate_heap(unsigned long long int size, char silent) {
         unsigned long long int* heap = (unsigned long long int*) malloc(size);
 
         for (unsigned long long int i = 0; i < size / sizeof(long long int); i++) {
-        heap[i] = ((unsigned long long int)rand() << 32) + (unsigned long long int)rand();
+                heap[i] = i;
-
                 if (!silent && i > 0 && i % (1024 * 1024 * 1024 / sizeof(long long int)) == 0) {
                         printf(".");
                         fflush(stdout);