更新时间:2023-11-17 23:35:34
我可以通过我举一个答案:的http://计算器.COM / A /二万七千八百分之二十九万六千零一十八
FREAD(缓冲区的sizeof(炭),BLOCK_SIZE,标准输入);
I am trying to write a cat clone to exercise C, I have this code:
#include <stdio.h>
#define BLOCK_SIZE 512
int main(int argc, const char *argv[])
{
if (argc == 1) { // copy stdin to stdout
char buffer[BLOCK_SIZE];
while(!feof(stdin)) {
size_t bytes = fread(buffer, BLOCK_SIZE, sizeof(char),stdin);
fwrite(buffer, bytes, sizeof(char),stdout);
}
}
else printf("Not implemented.\n");
return 0;
}
I tried echo "1..2..3.." | ./cat
and ./cat < garbage.txt
but I don't see any output on terminal. What I am doing wrong here?
Edit: According to comments and answers, I ended up doing this:
void copy_stdin2stdout()
{
char buffer[BLOCK_SIZE];
for(;;) {
size_t bytes = fread(buffer, sizeof(char),BLOCK_SIZE,stdin);
fwrite(buffer, sizeof(char), bytes, stdout);
fflush(stdout);
if (bytes < BLOCK_SIZE)
if (feof(stdin))
break;
}
}
i can quote an answer by me: http://***.com/a/296018/27800
fread(buffer, sizeof(char), block_size, stdin);