d*******2
发帖数: 340 | 1 FILE *pFile;
pFile=fopen("myfile.txt","r");
fscanf(pFile,"%e, %e, %e, %e",&variable1,&variable2,&variable3,&variable4)
fclose(pFile);
myfile.txt
4.232e-002, 4.232e-002, 4.232e-002, 4.232e-002
为什么不对呢？
先谢了！ | l*****d
发帖数: 754 | 2 What's the error msg?
【在 d*******2 的大作中提到】
: FILE *pFile;
: pFile=fopen("myfile.txt","r");
: fscanf(pFile,"%e, %e, %e, %e",&variable1,&variable2,&variable3,&variable4)
: fclose(pFile);
: myfile.txt
: 4.232e-002, 4.232e-002, 4.232e-002, 4.232e-002
: 为什么不对呢？
: 先谢了！
| d*******2
发帖数: 340 | 3 没有error message. 用
cout << "variable1: " << variable1 << endl;
cout << "variable2: " << variable2 << endl;
看,
variable1: 1
variable2: 7.7433e+268
variable1,variable2是double型. (double variable1,variable2;)
【在 l*****d 的大作中提到】
: What's the error msg?
| l*****d
发帖数: 754 | 4 Google fopen C++, and see the parameter list of fopen function.
【在 d*******2 的大作中提到】
: 没有error message. 用
: cout << "variable1: " << variable1 << endl;
: cout << "variable2: " << variable2 << endl;
: 看,
: variable1: 1
: variable2: 7.7433e+268
: variable1,variable2是double型. (double variable1,variable2;)
| d*******2
发帖数: 340 | | l*****d
发帖数: 754 | 6 En, you changed your original post, but that is ok.
Please post the whole source code of the smallest complete program as you
found problem.
【在 d*******2 的大作中提到】
: 多谢,google了
: http://www.cplusplus.com/reference/clibrary/cstdio/fopen.html
: http://www.cplusplus.com/reference/clibrary/cstdio/fscanf.html
: 好象没错啊.能说详细一点吗?我智商偏低啊.
| d***y
发帖数: 65 | 7 maybe you can try to use "%lf" instead of "%e"
【在 d*******2 的大作中提到】
: FILE *pFile;
: pFile=fopen("myfile.txt","r");
: fscanf(pFile,"%e, %e, %e, %e",&variable1,&variable2,&variable3,&variable4)
: fclose(pFile);
: myfile.txt
: 4.232e-002, 4.232e-002, 4.232e-002, 4.232e-002
: 为什么不对呢？
: 先谢了！
| d*******2
发帖数: 340 | 8 正确答案! 多谢!
【在 d***y 的大作中提到】
: maybe you can try to use "%lf" instead of "%e"
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