Data update

Task/String-concatenation/C/string-concatenation-1.c

@@ -0,0 +1,25 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+char *sconcat(const char *s1, const char *s2)
+{
+  char *s0 = malloc(strlen(s1)+strlen(s2)+1);
+  strcpy(s0, s1);
+  strcat(s0, s2);
+  return s0;
+}
+
+int main()
+{
+   const char *s = "hello";
+   char *s2;
+
+   printf("%s literal\n", s);
+   /* or */
+   printf("%s%s\n", s, " literal");
+
+   s2 = sconcat(s, " literal");
+   puts(s2);
+   free(s2);
+}