A scores/scores.txt

@@ -0,0 +1,26 @@
+90722
+16248
+10894
+10121
+8593
+7139
+4626
+4621
+4485
+3651
+2747
+2481
+989
+829
+775
+721
+710
+657
+579
+562
+555
+469
+431
+420
+309
+297

A scores/top.c

@@ -0,0 +1,78 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int read_input(char **bufferptr) {
+  FILE *fptr;
+
+  fptr = fopen("scores.txt", "r");
+  if (fptr == NULL) {
+    printf("ERROR: can't open file");
+    return 0;
+  }
+
+  fseek(fptr, 0L, SEEK_END);
+  size_t sz = ftell(fptr);
+  rewind(fptr);
+  *bufferptr = malloc(sz + 1);
+  if (*bufferptr == NULL) {
+    fclose(fptr);
+    printf("ERROR: couldn't allocate memory");
+    return 0;
+  }
+  size_t bytes_read = fread(*bufferptr, 1, sz, fptr);
+  (*bufferptr)[bytes_read] = '\0';
+
+  fclose(fptr);
+  return sz;
+}
+
+int total_score = 0;
+
+void pp(int position, int score) {
+  printf("Die Top %d haben %d gezählt und machen damit %f%% aus.\n", position,
+         score, (float)score / (float)total_score * 100);
+}
+
+int main() {
+  char *buffer = NULL;
+  int sz = read_input(&buffer);
+  if (!sz)
+    return 1;
+
+  int i = -1, buf2i = -1;
+  char *buffer2 = malloc(sz);
+  // read total score
+  while (1) {
+    i++, buf2i++;
+    if (buffer[i] == '\n') {
+      buffer2[buf2i] = '\0';
+      total_score = atoi(buffer2);
+      break;
+    }
+    buffer2[buf2i] = buffer[i];
+  }
+
+  buf2i = -1;
+  int position = 0, score = 0;
+
+  // read other values
+  while (1) {
+    i++, buf2i++;
+    if (i == sz)
+      break;
+
+    if (buffer[i] == '\n') {
+      buffer2[buf2i] = '\0';
+      score += atoi(buffer2);
+      buf2i = -1;
+
+      position++;
+      if (position == 1 || position == 3 || position == 5 || position == 10)
+        pp(position, score);
+
+      continue;
+    }
+
+    buffer2[buf2i] = buffer[i];
+  }
+}