VC读取文本文件里的数据到两个数组中.doc

VC++读取文本文件里的数据到两个数组中 VC++读取文本文件里的数据到两个数组中 1,0.056183,0.015906,0.003513,0.000283,0.000003,0.000828,0.111811 1,0.020147,0.005431,0.001509,0.000059,0.000003,0.000797,0.111808 1,0.034398,0.009768,0.001874,0.000130,0.000003,0.000805,0.111808 1,0.069287,0.019784,0.005178,0.000442,0.000003,0.000851,0.111788 2,0.026044,0.001199,0.001091,0.000081,0.000003,0.000794,0.111806 2,0.090909,0.008505,0.003210,0.001535,0.000004,0.000909,0.111562 2,0.115152,0.002632,0.006299,0.001627,0.000004,0.000825,0.111374 2,0.073055,0.001612,0.001854,0.000210,0.000003,0.000798,0.111816 3,0.354464,0.198575,0.028486,0.024844,0.000663,0.012116,0.113298 3,0.552498,0.364998,0.240247,0.210239,0.047230,0.130700,0.010317 3,0.264865,0.137833,0.013999,0.008875,0.000101,0.004152,0.111612 3,0.448321,0.263610,0.042394,0.038381,0.001551,0.020586,0.111953 3,0.218182,0.099159,0.001695,0.000309,0.000003,0.000875,0.111797 3,0.280098,0.134837,0.002879,0.004435,0.000018,0.002441,0.112025 3,0.451433,0.261783,0.084898,0.045366,0.002778,0.019255,0.069580 4,0.212613,0.098557,0.012569,0.007624,0.000077,0.003238,0.111885 4,0.264865,0.113646,0.005411,0.002057,0.000009,0.001334,0.111674 4,0.267486,0.132535,0.015797,0.009446,0.000117,0.004269,0.110818 4,0.233743,0.105773,0.023915,0.013395,0.000242,0.005248,0.111885 4,0.273055,0.132115,0.003436,0.002413,0.000009,0.001539,0.111798 上面是数据文件的一部分，其中第一列是类别标识，每一行从第二个数据起是特征属性。 首先，你要用C＋＋语言写一个函数，从文本文件中将特征数据读入一个二维数组中，将类别标识读入一个一维数组中。 其中Index[]就是你要的类别标识数组，Property[][3]就是特征属性数组 假设你的数据文件是C:\11.txt #include stdio.h #include iostream.h #include string.h #include stdlib.h #define N 100 void main() { FILE *f; int Index[N],i=0,j; float Property[N][7]; char str[100],*pNext; f=fopen(C:\\11.txt,r);//打开文件 if(f==NULL) {coutError, file dont open!endl; return;}//如果文件没有打开就退出报错 while(!feof(f))//检测是否读到了文件结尾 { fgets(str,100,f);//以文本形式从文件中读出一行 Index[i]=atoi(str);//将类别标识转换为整型数，赋值 pNext=str; for(j=0;j7;j++) { pNext=strchr(pNext+1,,);//有哪些信誉好的足球投注网站数据间的分隔符 Property[i][j]=atof(pNext+1);//将类别标识转换为浮点型数