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Improvements and reading from stdin #77

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21 changes: 11 additions & 10 deletions tabs.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2,31 +2,32 @@

/*
TODO
- improve the repeated putchar(' ');
- use stdin instead of a file for input
- error handling...

PULL REQUESTS ARE WELCOME!
*/

#include <stdio.h>

int main() {
File *fp;
int main(int argc, char *argv[]) {
File *in = stdin;
int c;
fp = fopen("input.txt", "R");

if(argc == 2) {
fp = fopen("input.txt", "R");

if(fp != NULL)
in = fp;
}

while ((c = fgetc(fp)) != EOF) {
if (c == '\t') {
putchar(' ');
putchar(' ');
putchar(' ');
putchar(' ');
puts(" ");
} else {
putchar(c);
}
}

fclose(fp);
fclose(in);
return 0;
}