将数据存储在程序中，而不是在外部文件中

问题描述

| 我有以下C代码的一部分，该代码使用文件名WMM.COF中的数据，并使用文件中存储的数据来计算地球的磁场。该程序运行正常，只是我无法让该程序访问外部文件。我希望所有数据都已存储在程序中。我尝试使用结构数组复制数据，然后将数组放入字符串中，但这会导致程序错误并且无法产生正确的结果。这是我要修改的程序代码。

static void E0000(int IENTRY,int *maxdeg,double alt,double glat,double glon,double time,double *dec,double *dip,double *ti,double *gv)
{
  static int maxord,i,icomp,n,m,j,D1,D2,D3,D4;
  static double c[13][13],cd[13][13],tc[13][13],dp[13][13],snorm[169],sp[13],cp[13],fn[13],fm[13],pp[13],k[13][13],pi,dtr,a,b,re,a2,b2,c2,a4,b4,c4,epoch,gnm,hnm,dgnm,dhnm,flnmj,otime,oalt,olat,olon,dt,rlon,rlat,srlon,srlat,crlon,crlat,srlat2,crlat2,q,q1,q2,ct,st,r2,r,d,ca,sa,aor,ar,br,bt,bp,bpp,par,temp1,temp2,parp,bx,by,bz,bh;
  static char model[20],c_str[81],c_new[5];
  static double *p = snorm;
  char answer;

  FILE *wmmdat;


  wmmdat = fopen(\"WMM.COF\",\"r\");

/* INITIALIZE CONSTANTS */
  maxord = *maxdeg;
  sp[0] = 0.0;
  cp[0] = *p = pp[0] = 1.0;
  dp[0][0] = 0.0;
  a = 6378.137;
  b = 6356.7523142;
  re = 6371.2;
  a2 = a*a;
  b2 = b*b;
  c2 = a2-b2;
  a4 = a2*a2;
  b4 = b2*b2;
  c4 = a4 - b4;

/* READ WORLD MAGNETIC MODEL SPHERICAL HARMONIC COEFFICIENTS */
  c[0][0] = 0.0;
  cd[0][0] = 0.0;

  fgets(c_str,80,wmmdat);


 S3:
  if (fgets(c_str,wmmdat) == NULL) goto S4;

/* CHECK FOR LAST LINE IN FILE */
  for (i=0; i<4 && (c_str[i] != \'\\0\'); i++)
    {
      c_new[i] = c_str[i];
      c_new[i+1] = \'\\0\';
    }
  icomp = strcmp(\"9999\",c_new);
  if (icomp == 0) goto S4;
/* END OF FILE NOT ENCOUNTERED,GET VALUES */
sscanf(c_str,\"%d%d%lf%lf%lf%lf\",&n,&m,&gnm,&hnm,&dgnm,&dhnm);

  if (n > maxord) goto S4;
  if (m > n || m < 0.0) 
    {
      fprintf(stderr,\"Corrupt record in model file WMM.COF\\n\");
      exit(1);
    }

  if (m <= n)
    {
      c[m][n] = gnm;
      cd[m][n] = dgnm;
      if (m != 0)
        {
          c[n][m-1] = hnm;
          cd[n][m-1] = dhnm;
        }
    }
  goto S3;

/* CONVERT SCHMIDT NORMALIZED GAUSS COEFFICIENTS TO UNNORMALIZED */
 S4:
  *snorm = 1.0;
  fm[0] = 0.0;
  for (n=1; n<=maxord; n++)
    {
      *(snorm+n) = *(snorm+n-1)*(double)(2*n-1)/(double)n;
      j = 2;
      for (m=0,D1=1,D2=(n-m+D1)/D1; D2>0; D2--,m+=D1)
        {
          k[m][n] = (double)(((n-1)*(n-1))-(m*m))/(double)((2*n-1)*(2*n-3));
          if (m > 0)
            {
              flnmj = (double)((n-m+1)*j)/(double)(n+m);
              *(snorm+n+m*13) = *(snorm+n+(m-1)*13)*sqrt(flnmj);
              j = 1;
              c[n][m-1] = *(snorm+n+m*13)*c[n][m-1];
              cd[n][m-1] = *(snorm+n+m*13)*cd[n][m-1];
            }
          c[m][n] = *(snorm+n+m*13)*c[m][n];
          cd[m][n] = *(snorm+n+m*13)*cd[m][n];
        }
      fn[n] = (double)(n+1);
      fm[n] = (double)n;
    }
  k[1][1] = 0.0;

  otime = oalt = olat = olon = -1000.0;
  fclose(wmmdat);
  return;

我想出的在程序中包含数据的代码如下：

    struct wmm
       {
        int   alpha;
        int   beta;
        float gamma;
        float delta;
        float epsilon;
        float zeta;
       }book[90]= {{1,-29496.6,0.0,11.6,0.0},{1,1,-1586.3,4944.4,16.5,-25.9},{2,-2396.6,-12.1,3026.1,-2707.7,-4.4,-22.5},2,1668.6,-576.1,1.9,-11.8},{3,1340.1,0.4,/* 50+ similar lines of code */
 {12,8,-0.4,0.1,{12,9,0.3,10,0.2,-0.9,11,-0.8,-0.2,-0.1,12,0.9,0.0}};





for (i = 0; i < 90 && offset < buf_size; i++) 
    {
     offset += snprintf(c_str + offset,buf_size - offset,\"%d %d %7.1lf %7.1lf %7.1lf %7.1lf \\n\",book[i].alpha,book[i].beta,book[i].gamma,book[i].delta,book[i].epsilon,book[i].zeta);
     }


     sscanf(c_str,&dhnm);  

问题是snprintf导致程序每次放入程序时都冻结并终止。当我编写的代码自行运行时，似乎可以正确创建c_str，但当我尝试查看变量n，m，gnm，hnm，dgnm和dhnm时，每个变量仅显示一个值。     

解决方法

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