Discussion
What is the output of this C code?
#include <stdio.h>
int main()
{
printf("sanfoundry\rclass\n");
return 0;
}
Answer: C
Correct answer: classundry
The carriage return moves the cursor back to the start of the line without advancing it, so class is written over the beginning of sanfoundry. The five characters of class replace sanfo, leaving undry visible behind them.
The result on a terminal is classundry. This is the practical difference between \r and \r\n: alone, the carriage return overwrites; followed by a newline it simply ends the line, which is why the two together are a line ending on some systems.
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