1 files changed, 37 insertions, 0 deletions

diff --git a/5/3.c b/5/3.c
new file mode 100644
index 0000000..fe839a4
--- /dev/null
+++ b/5/3.c
@@ -0,0 +1,37 @@
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define MAXLEN 1000
+
+void mstrcat(char *, char *);
+
+int main(int argc, char *argv[]) {
+  char *s, *t;
+  size_t n;
+
+  s = malloc(MAXLEN);
+  t = malloc(MAXLEN);
+  n = sizeof(s);
+
+  printf("first str: ");
+  getline(&s, &n, stdin);
+
+  printf("second str: ");
+  getline(&t, &n, stdin);
+
+  mstrcat(s, t);
+  printf("strcat: %s\n", s);
+
+  return 0;
+}
+
+void mstrcat(char *s, char *t) {
+  int i;
+
+  for (i = 0; i < MAXLEN - 1 && *s++; i++)
+    ;
+  for (s -= 2; i < MAXLEN - 1 && (*s++ = *t++) != '\n'; i++)
+    ;
+  *s = 0;
+}
\ No newline at end of file