a是多个字符和空格时，fscanf (fp,"%d",&a)调用之后，fp指针位置跳过空格吗？

Question

比如

fp内容:"how are you";

fscanf (fp,"%d",&a);
fscanf (fp,"%d",&b);

a输出how
b输出are吗？
为什么第二次调用fscanf自动跳过空格？

Answer 1

Whitespace character: the function will read and ignore any whitespace characters encountered before the next non-whitespace character (whitespace characters include spaces, newline and tab characters -- see isspace). A single whitespace in the format string validates any quantity of whitespace characters extracted from the stream (including none).
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