23 lines
333 B
C
23 lines
333 B
C
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#include "io.h"
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int readnum(FILE *fd, char *buf, size_t len) {
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int i = 0;
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for(;;) {
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int c = getc(fd);
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if (c == EOF)
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break;
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if (c < '0' || c > '9')
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continue;
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buf[i++] = c;
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if (i > len)
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break;
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}
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return i;
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}
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