急急急!!!c语言怎么读txt里面的坐标点,并求面积~~(附txt文本内容)_百度...答:==NULL){ printf("Open file failure...\n");exit(0);} for(i=0,n*=2;i<n;i++)//Reading data...fscanf(fp,"%lf%c",pcoord+i,&cx);//,for(i=0;i<n;i+=2)//To look at...printf("%g, %g,\n",*(pcoord+i),*(pcoord+i+1));fclose(fp);free(pcoord);} ...