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我需要编写一个程序来获取一个字符并将其与数组(ascii 表)进行比较
char asciiname[] =
"NUL\0" "SOH\0" "STX\0" "ETX\0" "EOT\0" "ENQ\0" "ACK\0" "BEL\0"
" BS\0" " HT\0" " NL\0" " VT\0" " NP\0" " CR\0" " SO\0" " SI\0"
"DLE\0" "DC1\0" "DC2\0" "DC3\0" "DC4\0" "NAK\0" "SYN\0" "ETB\0"
"CAN\0" " EM\0" "SUB\0" "ESC\0" " FS\0" " GS\0" " RS\0" " VS\0"
" SP\0" " !\0" " \"\0" " #\0" " $\0" " %\0" " &\0" " '\0"
" (\0" " )\0" " *\0" " +\0" " ,\0" " -\0" " .\0" " /\0"
" 0\0" " 1\0" " 2\0" " 3\0" " 4\0" " 5\0" " 6\0" " 7\0"
" 8\0" " 9\0" " :\0" " ;\0" " <\0" " =\0" " >\0" " ?\0"
" @\0" " A\0" " B\0" " C\0" " D\0" " E\0" " F\0" " G\0"
" H\0" " I\0" " J\0" " K\0" " L\0" " M\0" " N\0" " O\0"
" P\0" " Q\0" " R\0" " S\0" " T\0" " U\0" " V\0" " W\0"
" X\0" " Y\0" " Z\0" " [\0" " \\\0" " ]\0" " ^\0" " _\0"
" `\0" " a\0" " b\0" " c\0" " d\0" " e\0" " f\0" " g\0"
" h\0" " i\0" " j\0" " k\0" " l\0" " m\0" " n\0" " o\0"
" p\0" " q\0" " r\0" " s\0" " t\0" " u\0" " v\0" " w\0"
" x\0" " y\0" " z\0" " {\0" " |\0" " }\0" " ~\0" "DEL\0"
;
输入将为}~a,bz\Z。我需要获取每个字符并将其与上面的数组进行比较,如果匹配则打印出它的十六进制。
#include <stdio.h>
#include <string.h>
#define MAXLINE 1000
int getline1(char s[], int max);
main ()
{
int len, i, j;
char line[MAXLINE];
char asciiname[] =
"NUL\0" "SOH\0" "STX\0" "ETX\0" "EOT\0" "ENQ\0" "ACK\0" "BEL\0"
" BS\0" " HT\0" " NL\0" " VT\0" " NP\0" " CR\0" " SO\0" " SI\0"
"DLE\0" "DC1\0" "DC2\0" "DC3\0" "DC4\0" "NAK\0" "SYN\0" "ETB\0"
"CAN\0" " EM\0" "SUB\0" "ESC\0" " FS\0" " GS\0" " RS\0" " VS\0"
" SP\0" " !\0" " \"\0" " #\0" " $\0" " %\0" " &\0" " '\0"
" (\0" " )\0" " *\0" " +\0" " ,\0" " -\0" " .\0" " /\0"
" 0\0" " 1\0" " 2\0" " 3\0" " 4\0" " 5\0" " 6\0" " 7\0"
" 8\0" " 9\0" " :\0" " ;\0" " <\0" " =\0" " >\0" " ?\0"
" @\0" " A\0" " B\0" " C\0" " D\0" " E\0" " F\0" " G\0"
" H\0" " I\0" " J\0" " K\0" " L\0" " M\0" " N\0" " O\0"
" P\0" " Q\0" " R\0" " S\0" " T\0" " U\0" " V\0" " W\0"
" X\0" " Y\0" " Z\0" " [\0" " \\\0" " ]\0" " ^\0" " _\0"
" `\0" " a\0" " b\0" " c\0" " d\0" " e\0" " f\0" " g\0"
" h\0" " i\0" " j\0" " k\0" " l\0" " m\0" " n\0" " o\0"
" p\0" " q\0" " r\0" " s\0" " t\0" " u\0" " v\0" " w\0"
" x\0" " y\0" " z\0" " {\0" " |\0" " }\0" " ~\0" "DEL\0"
;
while ((len = getline1(line, MAXLINE)) != 0) {
for(i = 0; i < len;i++){
printf("The code %3x represents %s\n", line[i], &asciiname[4*line[i]]);
}
}
}
int getline1(char s[], int max) {
int i, c;
for (i=0; i<max-1 && (c=getchar())!=EOF && c!='\n'; ++i) {
s[i] = c;
}
if (c == '\n') {
s[i] = c;
++i;
}
s[i] = '\0';
return i;
}
我是 C 的新手,似乎无法弄清楚字符和 asciiname 数组中的字符串之间的比较是如何进行的。任何指针将不胜感激。
感谢下面的帮助,这是我最终使用的最终代码。
最佳答案
我不知道你为什么要那样做,但是看看这个如何做的例子
#include <stdio.h>
#include <string.h>
char *asciiname[128] = {
"NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "BEL",
"BS", "HT", "NL", "VT", "NP", "CR", "SO", "SI",
"DLE", "DC1", "DC2", "DC3", "DC4", "NAK", "SYN", "ETB",
"CAN", "EM", "SUB", "ESC", "FS", "GS", "RS", "VS",
" SP", "!", "\"", "#", "$", "%", "&", "'",
"(", ")", "*", "+", ",", "-", ".", "/",
"0", "1", "2", "3", "4", "5", "6", "7",
"8", "9", ":", ";", "<", "=", ">", "?",
"@", "A", "B", "C", "D", "E", "F", "G",
"H", "I", "J", "K", "L", "M", "N", "O",
"P", "Q", "R", "S", "T", "U", "V", "W",
"X", " Y", " Z", " [", " \\", "]", "^", "_",
"`", " a", " b", " c", " d", "e", "f", "g",
"h", " i", " j", " k", " l", "m", "n", "o",
"p", " q", " r", " s", " t", "u", "v", "w",
"x", " y", " z", " {", " |", "}", "~", "DEL"
};
int
main(void)
{
int chr;
while (((chr = getchar()) != EOF) && (chr != '\n'))
{
if (chr > 127)
continue;
printf("The code 0x%3x represents: %3s\n", chr, asciiname[chr]);
}
return 0;
}
关于比较字符与字符串 C,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/28787549/
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