C语言将多个字符串合并为一个字符串例如：数组[a,bbb,ccc]->字符串"a,bbb,ccc"

//将文件名列表合并为一个字符串例如：数组[a,bbb,ccc]->字符串"a,bbb,cc" author:wangchangshuai jlu
char* combineFileNames(const char** fileNameList, const int count)
{
if (count <= 0)
{
return NULL;
}
int i, length = 0;
for (i = 0; i < count; ++i)
{
length += strlen(fileNameList[i]);
}
//加上逗号的个数
length += count - 1;

char* fileNamesStr = NULL;
if ((fileNamesStr = (char*) myMalloc(sizeof(char) * (length + 1))) == NULL)
{
myLog("Malloc heap failed!\n");
return NULL;
}
memset(fileNamesStr, 0, sizeof(char) * (length + 1));
strcpy(fileNamesStr, fileNameList[0]);
for (i = 1; i < count; ++i)
{
strcat(fileNamesStr, ",");
strcat(fileNamesStr, fileNameList[i]);
}
return fileNamesStr;
}