c语言程序设计(谭浩强)第四版 课后答案

str[i]&gt;=4A,&amp;&amp;str[i]&lt;=<Z,)\rstr[i]+=l;\relse if(str[i]==<z,||str[i]==*Z,) str[i]-=25;\r)\r)\r#endif\rprintf(&quot;output:\n%s\n&quot;,str);\rreturn 0;\r)\r12-1\r#include &lt;stdio.h&gt;\rint main()\r{unsigned a,b,c,d;\rprintf(&quot;please enter a:&quot;); scanf(&quot;%o&quot;,&amp;a);\rb=a&gt;&gt;4;\rc=~(~0&lt;&lt;4);\rd=b &amp; c;\rprintf(&quot;%o,%d\n%o,%d\n&quot;,a,a,d,d); return 0;\r)\r12-2\r#include &lt;stdio.h&gt;.\rint main()\r{unsigned short a,b,c;\rint n;\rprintf(&quot;please enter a &amp; n:\n&quot;);\rscanf(&quot;a=%o,n=%d&quot;,&amp;a,&amp;n); b=a&lt;&lt;(l 6-n);\rc=a&gt;&gt;n;\rc=c|b;\rprintfl(&quot;a:%o\nc:%o\n&quot;,a,c); return 0;