cleanup

S1/GdCP/klausur_c_1/strmatch.c

@@ -0,0 +1,46 @@
+#include<string.h>
+#include<ctype.h>
+
+int str_match(const char s[], const char p[], int strict) {
+  // takes string and pattern and strict flag
+  // should return if the characters in the pattern appear in the string in the same order
+  // strict should also check for difference in capital letters
+  // it does not matter whether there are characters in between (other)
+  
+  int ls = strlen(s);
+  int lp = strlen(p);
+  int o = -1;
+
+  // Loop the patterns and the string for each pattern
+  for (const char *cp = p; *p != '\0'; p++) { 
+    for (int j = 0; j < ls; j++) {
+      char chp = *p;
+      char cha = s[j];
+
+      if (!strict) {
+        chp = (char) tolower(chp); cha = (char) tolower(cha);
+      }
+      if (cha == chp) {
+        // Break condition
+        if (j < o) {
+          return 0;
+        } 
+
+        // Set the new occurence
+        o = j;
+        break;
+      }
+    }
+  }
+  return 1;
+}
+
+#include<stdio.h>
+
+int main() {
+  printf("%d\n", str_match("Hallo Welt", "alo", 1));
+  printf("%d\n", str_match("Hallo Welt", "alo", 0));
+  printf("%d\n", str_match("Hallo Welt", "alho", 1));
+  printf("%d\n", str_match("Hallo Welt", "alho", 0));
+}
+