将double型小数点后面多余的零去掉

chars[16]={0};

sprintf(s,"%4f",dFirst);//dFirst为double型数据类型

//m_qsInputOne=QString::fromUtf8(s);

//***********************************转换数据****************

intlength=0;

for(inti=strlen(s)-1;i>=0;i--)

{

if(s[i]==‘0‘)

{

continue;

}

else

{

if(s[i]==‘.‘)

{

length=i;

}

else

{

length=i+1;

}

break;

}

}

charresult[16]={0};

strncpy(result,s,length);

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将double型小数点后面多余的零去掉

原文：http://www.cnblogs.com/hqu-ye/p/3578317.html