51 lines
709 B
C++
51 lines
709 B
C++
|
#include <stdio.h>
|
||
|
|
|
||
|
|
bool cat_file(FILE* fp)
|
||
|
|
{
|
||
|
|
char buffer[1024];
|
||
|
|
size_t n_read;
|
||
|
|
while ((n_read = fread(buffer, 1, sizeof(buffer) - 1, fp)) > 0)
|
||
|
|
{
|
||
|
|
buffer[n_read] = '\0';
|
||
|
|
fputs(buffer, stdout);
|
||
|
|
}
|
||
|
|
if (ferror(fp))
|
||
|
|
{
|
||
|
|
perror("fread");
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
int main(int argc, char** argv)
|
||
|
|
{
|
||
|
|
int ret = 0;
|
||
|
|
|
||
|
|
printf("argc %d, argv %p\n", argc, argv);
|
||
|
|
for (int i = 0; i < argc; i++)
|
||
|
|
printf("%s\n", argv[i]);
|
||
|
|
|
||
|
|
if (argc > 1)
|
||
|
|
{
|
||
|
|
for (int i = 1; i < argc; i++)
|
||
|
|
{
|
||
|
|
FILE* fp = fopen(argv[i], "r");
|
||
|
|
if (fp == nullptr)
|
||
|
|
{
|
||
|
|
perror(argv[i]);
|
||
|
|
ret = 1;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
if (cat_file(fp))
|
||
|
|
ret = 1;
|
||
|
|
fclose(fp);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ret = cat_file(stdin);
|
||
|
|
}
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|