#include "stdio.h"int main(){    FILE *fp_G,*fp_A,*fp_T,*fp_Out;    double g[3];    double a[3];    double t;    double tmp=0;    fp_G=fopen("E:\\2-DSP\\C6726\\Prj\\Test2\\g.txt","r");    fp_A=fopen("E:\\2-DSP\\C6726\\Prj\\Test2\\a.txt","r");    fp_T=fopen("E:\\2-DSP\\C6726\\Prj\\Test2\\t.txt","r");    fp_Out=fopen("E:\\2-DSP\\C6726\\Prj\\Test2\\outtofile.txt","w");    while(1)    {        /*   读文件 */        for(int i=0;i<3;i++)        {            if(fscanf(fp_G,"%lf",&tmp)!=EOF)            {                g[i]=tmp;            }            else            {                goto CLOSEFILE_G;            }        }        for(int i=0;i<3;i++)        {            if(fscanf(fp_A,"%lf",&tmp)!=EOF)            {                a[i]=tmp;            }            else            {                goto CLOSEFILE_A;            }        }        if(fscanf(fp_T,"%lf",&tmp)!=EOF)        {            t=tmp;        }        else        {            goto CLOSEFILE_T;        }        /*写文件*/        fprintf( fp_Out, "%.15lf\t%.15lf\t%.15lf\n", g[0],g[1],g[2] );    }    CLOSEFILE_G:    fclose(fp_G);    CLOSEFILE_A:    fclose(fp_A);    CLOSEFILE_T:    fclose(fp_T);    fclose(fp_Out);    }