C + + uses pointer arrays and two-dimensional arrays to generate two-dimensional space, storing data and releasing it. Practice New/delete, new[]/delete[]

Two-dimensional space is generated by pointer array and two-dimensional array, and data is stored and released. For example, the data is as follows:

Use the next fgetc ()

1#include <iostream>2#include <stdio.h>3 using namespacestd;4 5 6 intMain ()7 {8 #if0//generating two-dimensional array storage9file* fp = fopen ("G:\\qtcode\\temp.txt","R");Ten  One     //char buf[3][10] ={0}; A     Char(*BUF) [Ten] =New Char[3][Ten]; -  -     intI,j,ch; the      for(i =0;i<3; i++) -     { -          for(j =0;j<8; j + +) -         { +CH =fgetc (FP); -             if(ch = ='\ n'|| ch = =EOF) +                  Break; ABUF[I][J] =ch; at         } -BUF[I][J] =' /'; -     } -  -      for(i =0;i<3; i++) -     { incout<<buf[i]<<Endl; -     } to     Delete[]buf; + fclose (FP); - #endif the  * #if1//generating pointer array storage $file* fp = fopen ("G:\\qtcode\\temp.txt","R");Panax Notoginseng  -     Char**buf =New Char*[3]; the     intI,j,ch; +      for(i =0;i<3; i++) A     { the* (buf+i) =New Char[8] ; +          for(j =0;j<8; j + +) -         { $CH =fgetc (FP); $             if(ch = ='\ n'|| ch = =EOF) -                  Break; -BUF[I][J] =ch; the         } -BUF[I][J] =' /';Wuyi     } the      for(i =0;i<3; i++) -     { Wucout<<buf[i]<<"***"<<Endl; -        Delete[] (* (buf+i)); About     //delete[] (buf[i]); $     } -     Delete[]buf; - fclose (FP); -  A #endif +     return 0; the}

. C + + uses pointer arrays and two-dimensional arrays to generate two-dimensional space, storing data and releasing it. Practice New/delete, new[]/delete[]