Create 1757.c

QUSTOJ/1757.c

@@ -0,0 +1,31 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+void replace(char* str,char* From,char* To)
+{
+    static char buffer[1024];
+    int L=strlen(From);
+    char* p;
+    while((p=strstr(str,From))!=NULL)
+    {
+        memset(buffer,0,1024);
+        strncpy(buffer,str,p-str);
+        strcat(buffer,To);
+        strcat(buffer,p+L);
+        strcpy(str,buffer);
+    }
+}
+
+char msg[1024];
+char a[1024];
+char b[1024];
+int main()
+{
+    gets(msg);
+    gets(a);
+    gets(b);
+    replace(msg,a,b);
+    printf("%s\n",msg);
+    return 0;
+}