moving from gitlab

006FindReplace/FindReplace/main.c

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+#include <stdio.h>
+#include <string.h>
+
+void findreplace(char *str, const char *oldword, const char *newword);
+
+int main(int argc, char *argv[]) {
+
+  // ./a.out filename oldWord newWord
+  if (argc != 4) {
+    printf("usage: %s filename oldword newword\n", argv[0]);
+    return 1;
+  }
+
+  char *filename = argv[1];
+  char *oldWord  = argv[2];
+  char *newWord  = argv[3];
+
+  if (!strcmp(oldWord, newWord)) {
+    printf("error: words are the same\n");
+    return 1;
+  }
+
+  FILE *file = fopen(filename, "r");
+  FILE *tmpf = fopen("tmp.txt", "w");
+  if (!file || !tmpf) {
+    printf("could not open files\n");
+    return 1;
+  }
+
+  size_t size = 256;
+  char buf[size];
+  // loop
+  while ((fgets(buf, size, file)) != NULL) {
+    //printf("%s", buf);
+    findreplace(buf, oldWord, newWord);
+
+    fputs(buf, tmpf);
+  }
+
+  fclose(file);
+  fclose(tmpf);
+
+  remove(filename);
+  rename("tmp.txt", filename);
+
+
+  return 0;
+}
+
+
+void findreplace(char *str, const char *oldword, const char *newword) {
+  char *pos, tmp[256];
+  int index = 0;
+  int oldLen = strlen(oldword);
+  while ((pos = strstr(str, oldword)) != NULL) {
+    strcpy(tmp, str);
+    index = pos - str;
+    str[index] = '\0';
+    strcat(str, newword);
+    strcat(str, tmp + index + oldLen);
+  }
+}
+
+
+
+
+
+
+
+
+

006FindReplace/FindReplace/test.txt

@@ -0,0 +1,3 @@
+Hello Thing
+This is a text file about the Thing
+This is my world

006FindReplace/main.c

@@ -0,0 +1,9 @@
+#include <stdlib.h>
+#include <stdio.h>
+
+
+// 
+
+int main(int argc, char *argv[]) {
+  return 0;
+}