我正在尝试编写一个从文件读取的小程序。我从包含以下数字的文件(random.dat)中尝试了此代码:

0.575 0.235
0.456 0.322


我编写的代码如下:

#include <stdio.h>
#include <stdlib.h>
#define N 2

int main (void) {
  FILE *fp;
  int i, j;
  double x,y,data[N][N] = {{0}};

  if ((fp = fopen("random.dat", "r")) == NULL ) {
    printf("Error\n");
    exit(EXIT_FAILURE);
  }

  fp = fopen("random.dat","r");
  printf("\n");

  for (i=0;i<N;i++){
    fscanf(fp,"%lf",&x);
    for(j=0;j<N;j++){
      fscanf(fp,"%lf",&x);
      data[i][j] = x;
      printf("data[%d][%d]=%lf\n",i,j,data[i][j]);
    }
  }
  printf("\n");
  fclose(fp);
return(0);
}


代码写得好吗?

我不明白为什么终端写:

data[0][0]=0.235000
data[0][1]=0.465000
data[1][0]=0.322000
data[1][1]=0.322000


代替:

data[0][0]=0.575000
data[0][1]=0.235000
data[1][0]=0.465000
data[1][1]=0.322000


任何想法?谢谢!

最佳答案

替换语句,

for (i=0;i<N;i++){
   fscanf(fp,"%lf",&x);
   for(j=0;j<N;j++){
     fscanf(fp,"%lf",&x);
     data[i][j] = x;
     printf("data[%d][%d]=%lf\n",i,j,data[i][j]);
   }
}




 for (i=0;i<N;i++){
    for(j=0;j<N;j++){
        fscanf(fp,"%lf",&x);
        data[i][j] = x;
        printf("data[%d][%d]=%lf\n",i,j,data[i][j]);
     }
 }

09-10 13:05
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