30 lines
726 B
C++
30 lines
726 B
C++
#include <fstream>
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#include <string>
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#include <iostream>
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#include <vector>
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using namespace std;
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int read_scanf(const string &filename,const int &cols,vector<double *> &_vector){
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// 功能：将filename 中的数据（共cols列）读取到_vector中，_vector可视为二维数组
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FILE *fp=fopen(filename.c_str(),"r");//打开并读取文件
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bool flag=true;
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int i=0;
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// printf("--read_scanf--");
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if(!fp){ cout<<"File open error!\n"; return 0; }
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while(flag){
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double *point=new double[cols];
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for(i=0;i<cols;i++){ //读取数据，存在_vector[cols]中
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if(EOF==fscanf(fp,"%lf",&point[i])) {
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flag=false;break;
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}
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if(EOF==fgetc(fp)) {
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flag=false;i++;break;
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}
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}
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if(cols==i)
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_vector.push_back(point);
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}
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fclose(fp);
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return 1;
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} |