Linux c++ int 转string 函数,写文件

string int2str(int val)
{
	int aa = val;
	stringstream ss;
	ss<<aa; 
	string s1 = ss.str();
	return s1;
}

　　

int writeFile(string charFpName, string chVal) //写文件
{	
	FILE *fp = fopen(charFpName.c_str(),"w+");
	if(NULL == fp){		
		return 0;
	}	
	fprintf(fp,"%s\n",chVal.c_str());
	fclose(fp);
	return 1;	
}