ファイルから二重の値を読み取ると、出力s -0000.0000のみが出力されます

Question

 #include<stdio.h> 
    #include<stdlib.h> 
    #include<io.h> 
    #include<conio.h> 

    extern _floatconvert; 
    #pragma extref _floatconvert 
     void main() 
     { 
      FILE *in,*out; 
      double f; 
      in = fopen("A.txt","r"); 
      out = fopen("S.txt","w"); 
      for (int i=0;i<18;i++) 
      { 
      for (int j=0;j<18;j++) 
      { 
       fscanf(in,"%.15lf",&f); 
       fprintf(stdout,"%.15lf",f); 
       getch(); 
       fprintf(out,"A=[%d][%d] = %lf ;",i,j,f); 
       } 
      } 
      fclose(in); 
      fclose(out); 
      getch(); 

      } 

ファイルから読み取って、コードが示すとおりに変更して別のファイルに保存したいと思います。

入力ファイルは次のとおりです。私が手

3.53448000000 -4.77154800002 1.76724000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 -4.77154800002 1.71775730005 0.00000000000 -8.58878640004 4.77154800002 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 1.76724000000 0.00000000000 7.06896000000 -4.77154800002 1.76724000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 -8.58878640004 4.77154800002 1.71775730005 0.00000000000 -8.58878640004 4.77154800002 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 4.77154800002 1.76724000000 0.00000000000 7.06896000000 -4.77154800002 1.76724000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 -8.58878640004 -4.77154800002 1.71775730005 0.00000000000 -8.58878640004 4.77154800002 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 4.77154800002 1.76724000000 0.00000000000 7.06896000000 -4.77154800002 1.76724000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 -8.58878640004 -4.77154800002 1.71775730005 0.00000000000 8.58878640004 4.77154800002 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 4.77154800002 1.76724000000 0.00000000000 7.06896000000 -4.77154800002 1.76724000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 8.58878640004 -4.77154800002 1.71775730005 0.00000000000 -8.58878640004 4.77154800002 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 4.77154800002 1.76724000000 0.00000000000 7.06896000000 4.77154800002 1.76724000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 -8.58878640004 -4.77154800002 1.71775730005 0.00000000000 -8.58878640004 4.77154800002 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 4.77154800002 1.76724000000 0.00000000000 7.06896000000 -4.77154800002 1.76724000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 -8.58878640004 -4.77154800002 1.71775730005 0.00000000000 -8.58878640004 4.77154800002 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 4.77154800002 1.76724000000 0.00000000000 7.06896000000 -4.77154800002 1.76724000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 -8.58878640004 -4.77154800002 1.71775730005 0.00000000000 4.77154800002 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 4.77154800002 1.76724000000 0.00000000000 7.06896000000 1.76724000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 0.00000000000 4.77154800002 1.76724000000 3.53448000000

出力は次のようになります。

A=[0][0] = -0.000000 ;A=[0][1] = -0.000000 ;A=[0][2] = -0.000000 ;A=[0][3] = -0.000000 ;A=[0][4] = -0.000000 ;A=[0][5] = -0.000000 ;A=[0][6] = -0.000000 ;A=[0][7] = -0.000000 ;A=[0][8] = -0.000000 ;A=[0][9] = -0.000000 ;A=[0][10] = -0.000000 ;A=[0][11] = -0.000000 ;A=[0][12] = -0.000000 ;A=[0][13] = -0.000000 ;A=[0][14] = -0.000000 ;A=[0][15] = -0.000000 ;A=[0][16] = -0.000000 ;A=[0][17] = -0.000000 ;A=[1][0] = -0.000000 ;A=[1][1] = -0.000000 ;A=[1][2] = -0.000000 ;A=[1][3] = -0.000000 ;A=[1][4] = -0.000000 ;A=[1][5] = -0.000000 ;A=[1][6] = -0.000000 ;A=[1][7] = -0.000000 ;A=[1][8] = -0.000000 ;A=[1][9] = -0.000000 ;A=[1][10] = -0.000000 ;A=[1][11] = -0.000000 ;A=[1][12] = -0.000000 ;A=[1][13] = -0.000000 ;A=[1][14] = -0.000000 ;A=[1][15] = -0.000000 ;A=[1][16] = -0.000000 ;A=[1][17] = -0.000000 ;A=[2][0] = -0.000000 ;A=[2][1] = -0.000000 ;A=[2][2] = -0.000000 ;A=[2][3] = -0.000000 ;A=[2][4] = -0.000000 ;A=[2][5] = -0.000000 ;A=[2][6] = -0.000000 ;A=[2][7] = -0.000000 ;A=[2][8] = -0.000000 ;A=[2][9] = -0.000000 ;A=[2][10] = -0.000000 ;A=[2][11] = -0.000000 ;A=[2][12] = -0.000000 ;A=[2][13] = -0.000000 ;A=[2][14] = -0.000000 ;A=[2][15] = -0.000000 ;A=[2][16] = -0.000000 ;A=[2][17] = -0.000000 ;A=[3][0] = -0.000000 ;A=[3][1] = -0.000000 ;A=[3][2] = -0.000000 ;A=[3][3] = -0.000000 ;A=[3][4] = -0.000000 ;A=[3][5] = -0.000000 ;A=[3][6] = -0.000000 ;A=[3][7] = -0.000000 ;A=[3][8] = -0.000000 ;A=[3][9] = -0.000000 ;A=[3][10] = -0.000000 ;A=[3][11] = -0.000000 ;A=[3][12] = -0.000000 ;A=[3][13] = -0.000000 ;A=[3][14] = -0.000000 ;A=[3][15] = -0.000000 ;A=[3][16] = -0.000000 ;A=[3][17] = -0.000000 ;A=[4][0] = -0.000000 ;A=[4][1] = -0.000000 ;A=[4][2] = -0.000000 ;A=[4][3] = -0.000000 ;A=[4][4] = -0.000000 ;A=[4][5] = -0.000000 ;A=[4][6] = -0.000000 ;A=[4][7] = -0.000000 ;A=[4][8] = -0.000000 ;A=[4][9] = -0.000000 ;A=[4][10] = -0.000000 ;A=[4][11] = -0.000000 ;A=[4][12] = -0.000000 ;A=[4][13] = -0.000000 ;A=[4][14] = -0.000000 ;A=[4][15] = -0.000000 ;A=[4][16] = -0.000000 ;A=[4][17] = -0.000000 ;A=[5][0] = -0.000000 ;A=[5][1] = -0.000000 ;A=[5][2] = -0.000000 ;A=[5][3] = -0.000000 ;A=[5][4] = -0.000000 ;A=[5][5] = -0.000000 ;A=[5][6] = -0.000000 ;A=[5][7] = -0.000000 ;A=[5][8] = -0.000000 ;A=[5][9] = -0.000000 ;A=[5][10] = -0.000000 ;A=[5][11] = -0.000000 ;A=[5][12] = -0.000000 ;A=[5][13] = -0.000000 ;A=[5][14] = -0.000000 ;A=[5][15] = -0.000000 ;A=[5][16] = -0.000000 ;A=[5][17] = -0.000000 ;A=[6][0] = -0.000000 ;A=[6][1] = -0.000000 ;A=[6][2] = -0.000000 ;A=[6][3] = -0.000000 ;A=[6][4] = -0.000000 ;A=[6][5] = -0.000000 ;A=[6][6] = -0.000000 ;A=[6][7] = -0.000000 ;A=[6][8] = -0.000000 ;A=[6][9] = -0.000000 ;A=[6][10] = -0.000000 ;A=[6][11] = -0.000000 ;A=[6][12] = -0.000000 ;A=[6][13] = -0.000000 ;A=[6][14] = -0.000000 ;A=[6][15] = -0.000000 ;A=[6][16] = -0.000000 ;A=[6][17] = -0.000000 ;A=[7][0] = -0.000000 ;A=[7][1] = -0.000000 ;A=[7][2] = -0.000000 ;A=[7][3] = -0.000000 ;A=[7][4] = -0.000000 ;A=[7][5] = -0.000000 ;A=[7][6] = -0.000000 ;A=[7][7] = -0.000000 ;A=[7][8] = -0.000000 ;A=[7][9] = -0.000000 ;A=[7][10] = -0.000000 ;A=[7][11] = -0.000000 ;A=[7][12] = -0.000000 ;A=[7][13] = -0.000000 ;A=[7][14] = -0.000000 ;A=[7][15] = -0.000000 ;A=[7][16] = -0.000000 ;A=[7][17] = -0.000000 ; ... .. .

すべてゼロ。どうして？

Answer 1

私はあなたのためにscanfについて十分に分かっていませんが、ここではあなたが望むことをするストリームを使用する同等のC++プログラムがあります。

#include<fstream> 

int main() { 
    std::ifstream in("A.txt"); 
    std::ofstream out("S.txt"); 

    if (!in) { /* Error opening in */ } 
    if (!out) { /* Error opening out */ } 

    out.setf(std::ios::fixed); 

    for (int r = 0; r < 18; r++) { 
     for (int c = 0; c < 18; c++) { 
      double f; 
      in >> f; 
      out << "A=[" << r << "][" << c << "] = " << f << " ;"; 
     } 
    } 
} 

Answer 2

fscanfは間違ったフォーマット指定子を指定しています。 fscanf(in,"%.15lf",&f);を書く代わりに、精度を指定する必要はありません。fscanf(in,"%lf",&f);

Answer 3

fprintfには%lfを使用しないでください。

%fを試してみてください。ここCorrect format specifier for double in printf