C语言实现：替换字符串中指定字符

int ReplaceStr(char* sSrc, char* sMatchStr, char* sReplaceStr)
{
int StringLen;
char caNewString[64];
char* FindPos;
FindPos =(char *)strstr(sSrc, sMatchStr);
if( (!FindPos) || (!sMatchStr) )
return -1;

while( FindPos )
{
memset(caNewString, 0, sizeof(caNewString));
StringLen = FindPos - sSrc;
strncpy(caNewString, sSrc, StringLen);
strcat(caNewString, sReplaceStr);
strcat(caNewString, FindPos + strlen(sMatchStr));
strcpy(sSrc, caNewString);

FindPos =(char *)strstr(sSrc, sMatchStr);
}
free(FindPos);
return 0;
}

譬如：ReplaceStr("abcd-efgh-ijklm-nopq","-","");//把字符串中的“-”删除掉！