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严重性 代码 说明 项目 文件 行 禁止显示状态 错误 C4996 ‘fopen’: This function or variable may be unsafe. Consider using fopen_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. Acm f:\vs\acm\acm\生成数据集.cpp 35
在函数中,先将1左移7位,就可以得到二进制值10000000,再将此值与一个字符“按位与”,然后判断其值是否为0。不为0就输出1,否则就输出0。类似的操作做8次,就可以输出一个字节的8位二进制码了。C++读写二进制文件 用C++程序理解汉字的机内码表示 唱歌不好听的人怎么学好唱歌?
1 2 3 4 5 //dataset.txt i厉害 love you 这里随便写。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 #include "stdafx.h" #include <cstdio> #include <stdio.h> #include <string.h> #define NSIZE 8 void Text2Bin (const char * sIn, const char * sOut) { char a[255 ]; int count = 0 ; int ch; for (int i = 0 ; i < 255 ; i++) a[i] = '\0' ; FILE* fin = fopen(sIn, "r" ); FILE* fout = fopen(sOut, "w" ); for (int i = 0 ; i < 255 ; i++) fscanf (fin, "%c" , &a[i]); for (int k = 0 ; k < 255 && a[k] != '\0' ; k++) { ch = a[k]; for (int a = 7 ; a >= 0 ; a--) fprintf (fout, "%d" , ch >> a & 1 ); } fclose(fin); fclose(fout); return ; } void Bin2Text (const char * sIn, const char * sOut) { FILE* fin = fopen(sIn, "r" ); FILE* fout = fopen(sOut, "w" ); char str[255 * 8 ]; for (int i = 0 ; i < 255 ; i++) str[i] = '\0' ; int i = 0 , j = 0 , iTemp = 0 , flag = 0 ; int ibina[NSIZE]; char cRead[NSIZE]; char cChar; for (int a = 0 ; a < 255 ; a++) fscanf (fin, "%c" , &str[a]); while (str[flag] != '\0' ) { for (int b = flag; b >= flag && b < flag + NSIZE; b++) { cRead[b % 8 ] = str[b]; } for (i = 0 ; i < NSIZE; i++) { ibina[i] = (cRead[i] - '0' ); } iTemp = 1 ; cChar = 0 ; for (j = 7 ; j >= 0 ; j--) { cChar += ibina[j] * iTemp; iTemp *= 2 ; } printf ("%c" , cChar); fprintf (fout, "%c" , cChar); flag = flag + 8 ; } fclose(fin); fclose(fout); return ; } int main () { Text2Bin("dataset.txt" , "da1.txt" ); Bin2Text("da1.txt" , "da2.txt" ); printf ("\nSuccessfully converted file!\n" ); return 0 ; }
最后更新时间:2018-03-20 16:48:52
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