给你一段代码看看
- float转换为字符串
- #include <iostream>
- #include <sstream>
- #include <stdio.h>
- #include <math.h>
- using namespace std;
- char ch[20];
- int cnt = 0;
-
- int split_int(int num)
- {
- int temp1,temp2;
- char ch1[6];
- int i=0;
-
- while(num%10)
- {
- temp1 = num%10;
- ch1[i] = temp1+'0';
- i++;
- num=num/10;
- }
- for(int k=i-1;k>=0;k--)
- {
- ch[cnt++] = ch1[k];
- }
- return 1;
-
- }
-
- bool float_to_str(float num)
- {
- int temp=(int)num,tmp;
- int previout;
- int temp1 = temp;
- int temp2 = temp;
- int i = 0, j = 0;
- ch[cnt++]='.';
- while(temp != 0)
- {
- previout = (int)num;
- num *= 10;
- temp=(int)num;
- // cout<<(int)num<<endl;
- temp = temp-(previout*(int)pow(10,1));
- ch[cnt++] = temp+'0';
- if((j > 5) || (temp < 0))
- {
- break;
- }
- j++;
- }
- ch[cnt-1] = '\0';
- return true;
- }
-
- int main(void)
- {
- float num = 74.77;
-
- /*
- ostringstream oss;//创建一个流
-
- oss<<num;//把值传递如流中
-
- string result=oss.str();//获取转换后的字符转并将其写入result
-
- cout<<result<<endl;*/
-
- split_int(int(num));
- float_to_str(num);
- cout<<ch<<endl;
- return 0;
- }
-
-
- /*
- #include <stdio.h>
-
- int main(void)
- {
- char ch[12];
- int i;
- sprintf(i,"%f",2.21f);
- printf("%s\n",ch);
- return 0;
- }*/
| 
楼主
