init

we/24-sy-3.c

@@ -0,0 +1,18 @@
+#include <stdlib.h>
+#include <string.h>
+
+char *strcpys(char *dest,char *src){
+    int len1 = strlen(dest);
+    int len2 = strlen(src);
+    char *res = (char *)malloc(sizeof(char)*(len1+len2+1));
+    if(!res){
+        printf("malloc failed\n");
+        return NULL;
+    }
+    memcpy(res,dest,len1);
+    memcpy(res+len1,src,len2);
+    res[len1+len2] = '\0';
+
+    free(src);
+    return res;
+}