把input中搜索到的第n个search替换成format。
outputiterator replace_all_copy (outputiterator, input, search, format);
sequence replace_all_copy (input, search, format);
void replace_all (input, search, format);
outputiterator ireplace_all_copy (outputiterator, input, search, format, local);
sequence ireplace_all_copy (input, search, format, local);
void ireplace_all (input, search, format, local);