{"id":54622,"date":"2025-08-13T08:40:00","date_gmt":"2025-08-13T00:40:00","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/54622.html"},"modified":"2025-08-13T08:40:00","modified_gmt":"2025-08-13T00:40:00","slug":"%e3%80%90c%e8%af%ad%e8%a8%80%e5%bc%ba%e5%8c%96%e8%ae%ad%e7%bb%8316%e5%a4%a9%e3%80%91-%e4%bb%8e%e5%9f%ba%e7%a1%80%e5%88%b0%e8%bf%9b%e9%98%b6%e7%9a%84%e8%9c%95%e5%8f%98%e4%b9%8b%e6%97%85day3","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/54622.html","title":{"rendered":"\u3010C\u8bed\u8a00\u5f3a\u5316\u8bad\u7ec316\u5929\u3011--\u4ece\u57fa\u7840\u5230\u8fdb\u9636\u7684\u8715\u53d8\u4e4b\u65c5:Day3"},"content":{"rendered":"

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\"\"<\/p>\n

🔥\u4e2a\u4eba\u4e3b\u9875：@\u8349\u8393\u718aLotso<\/p>\n

🎬\u4f5c\u8005\u7b80\u4ecb：C++\u7814\u53d1\u65b9\u5411\u5b66\u4e60\u8005<\/span><\/p>\n

📖\u4e2a\u4eba\u4e13\u680f：\u00a0\u300aC\u8bed\u8a00\u300b\u00a0\u300a\u6570\u636e\u7ed3\u6784\u4e0e\u7b97\u6cd5\u300b\u300aC\u8bed\u8a00\u5237\u9898\u96c6\u300b\u300aLeetcode\u5237\u9898\u6307\u5357\u300b<\/p>\n

\u2b50\ufe0f\u4eba\u751f\u683c\u8a00：\u751f\u6d3b\u662f\u9ed8\u9ed8\u7684\u575a\u6301，\u6bc5\u529b\u662f\u6c38\u4e45\u7684\u4eab\u53d7\u3002<\/span><\/p>\n

\u524d\u8a00：\u6211\u4eec\u8ddd\u79bb\u5b66\u4e60\u5b8cC\u8bed\u8a00\u5df2\u7ecf\u5f88\u4e45\u4e86，\u5728\u6570\u636e\u7ed3\u6784\u5b66\u5b8c\u540e，\u535a\u4e3b\u51c6\u5907\u901a\u8fc7\u8fd916\u5929\u7684\u5f3a\u5316\u8bad\u7ec3\u548c\u5927\u5bb6\u4e00\u8d77\u56de\u987eC\u8bed\u8a00\u7684\u77e5\u8bc6，\u4eca\u5929\u4f9d\u65e7\u662f\u4e94\u9053\u9009\u62e9\u548c\u4e24\u9053\u7f16\u7a0b\u9898，\u5e0c\u671b\u5927\u5bb6\u80fd\u6709\u6240\u6536\u83b7\u3002<\/span><\/p>\n

\n

\u76ee\u5f55<\/p>\n

\u9009\u62e9\u9898：<\/p>\n

\u7f16\u7a0b\u9898：<\/p>\n

1.\u8bb0\u8d1f\u5747\u6b63<\/p>\n

2.\u65cb\u8f6c\u6570\u7ec4\u7684\u6700\u5c0f\u6570\u5b57<\/p>\n

\n

\u9009\u62e9\u9898：<\/h2>\n

1.\u5df2\u77e5\u51fd\u6570\u7684\u539f\u578b\u662f： int fun(char b[10], int *a); ，\u8bbe\u5b9a\u4e49： char c[10];int d; ，\u6b63\u786e\u7684\u8c03\u7528\u8bed\u53e5\u662f（ ）<\/p>\n

A: fun(c,&d); B: fun(c,d); C: fun(&c,&d); D: fun(&c,d);<\/p>\n

\u7b54\u6848\u89e3\u6790：<\/p>\n

\u6b63\u786e\u7b54\u6848：A <\/p>\n

\u53c2\u6570a\u662f\u6307\u9488，\u8981\u63a5\u6536\u5730\u5740，BD\u9519\u8bef\u3002\u53c2\u6570b\u53ef\u4ee5\u63a5\u6536\u7684\u662fchar*，\u800c&c\u7684\u7c7b\u578b\u662fchar(*)[10]，C\u9519\u8bef<\/p>\n

2.\u8bf7\u95ee\u4e0b\u5217\u8868\u8fbe\u5f0f\u54ea\u4e9b\u4f1a\u88ab\u7f16\u8bd1\u5668\u7981\u6b62\u3010\u591a\u9009\u3011（ ） A: *c = 32; B: *d = 43 C: e=&a D: f=0x321f<\/p>\n

int a = 248, b = 4;
\nint const *c = 21;
\nconst int *d = &a;
\nint *const e = &b;
\nint const * const f = &a; <\/p>\n

\u7b54\u6848\u89e3\u6790：<\/p>\n

\u6b63\u786e\u7b54\u6848：ABCD <\/p>\n

\u5982\u679c const \u4f4d\u4e8e * \u7684\u5de6\u4fa7，\u5219 const \u5c31\u662f\u7528\u6765\u4fee\u9970\u6307\u9488\u6240\u6307\u5411\u7684\u53d8\u91cf，\u5373\u6307\u9488\u6307\u5411\u4e3a\u5e38\u91cf；*c\u548c*d\u4e0d\u80fd\u53d8\u3002\u5982\u679c const \u4f4d\u4e8e * \u7684\u53f3\u4fa7，\u5219 const \u5c31\u662f\u4fee\u9970\u6307\u9488\u672c\u8eab，\u5373\u6307\u9488\u672c\u8eab\u662f\u5e38\u91cf；e\u548cf\u4e0d\u80fd\u53d8\u3002<\/p>\n

3.\u4ee5\u4e0b\u7a0b\u5e8f\u7684\u8f93\u51fa\u7ed3\u679c\u4e3a（ ） A: *** B: *** *** *** *** C: *** *** D: * * *<\/p>\n

#include <stdio.h>
\nint i;
\nvoid prt()
\n{
\nfor (i = 5; i < 8; i++)
\nprintf("%c", '*');
\nprintf("\\\\t");
\n}
\nint main()
\n{
\nfor (i = 5; i <= 8; i++)
\nprt();
\nreturn 0;
\n} <\/p>\n

\u7b54\u6848\u89e3\u6790：<\/p>\n

\u6b63\u786e\u7b54\u6848：A <\/p>\n

\u5168\u5c40\u53d8\u91cfi，\u5728main()\u4e2d\u4fee\u6539\u4e3a5，\u7b2c\u4e00\u6b21\u5728prt()\u4e2d\u6267\u884c\u5faa\u73af\u8f93\u51fa\u4e09\u6b21'*'，i\u88ab\u4fee\u6539\u4e3a8，\u56de\u5230main()\u4e2d\u7b2c\u4e8c\u6b21\u8c03\u7528prt()\u65f6，i<8\u4e3a\u5047，\u5faa\u73af\u7ed3\u675f\u6ca1\u8f93\u51fa，\u6267\u884c\u4e00\u6b21print("\\\\t")，\u518d\u6b21\u56de\u5230\u4e3b\u51fd\u6570\u540ei++\u53d8\u4e3a9，i<=8\u4e3a\u5047，\u5faa\u73af\u7ed3\u675f;<\/p>\n

4.\u4e0b\u9762\u4ee3\u7801\u6bb5\u7684\u8f93\u51fa\u662f（ ）<\/p>\n

A.-6 B.12 C.0 D.-12<\/p>\n

\u7b54\u6848\u89e3\u6790：<\/p>\n

\u6b63\u786e\u7b54\u6848：D <\/p>\n

a+=a-=a*a\u7b49\u4ef7\u4e8ea=a+(a=a-a*a)，\u5373\u5148\u8ba1\u7b97a=a-a*a，\u6240\u4ee5\u6b64\u65f6a\u7684\u503c\u4e3a3-3*3=-6，\u518d\u8ba1\u7b97-6+(-6)=-12\u8d4b\u503c\u7ed9a，\u6240\u4ee5a\u7684\u503c\u4e3a-12，\u4e5f\u5c31\u662f\u6574\u4e2a\u8868\u8fbe\u5f0f\u7684\u503c，\u6240\u4ee5\u5e94\u9009\u62e9D<\/p>\n

5.\u4e0b\u5217\u4e0d\u80fd\u5b9e\u73b0\u6b7b\u5faa\u73af\u7684\u662f（）<\/p>\n

A.while(1){} B. for(;1;){}\u00a0 C.do{}while(1);\u00a0 D.for(;0;){}<\/p>\n

\u7b54\u6848\u89e3\u6790：<\/p>\n

\u6b63\u786e\u7b54\u6848：D<\/p>\n

\u53ea\u6709\u6761\u4ef6\u4e3a\u771f\u65f6\u624d\u8fdb\u884c\u5faa\u73af，ABC\u4e2d1\u4e3a\u771f，D\u4e2d0\u4e3a\u5047<\/p>\n

\n

\u7f16\u7a0b\u9898：<\/h2>\n

1.\u8bb0\u8d1f\u5747\u6b63<\/h2>\n

\u9898\u76ee\u94fe\u63a5：\u8bb0\u8d1f\u5747\u6b63_\u725b\u5ba2\u9898\u9738_\u725b\u5ba2\u7f51<\/p>\n

\u9898\u76ee\u63cf\u8ff0：<\/p>\n

\"\"<\/p>\n

\u9898\u76ee\u793a\u4f8b:<\/p>\n

\"\"<\/p>\n

\u4ee3\u7801\u6f14\u793a：<\/p>\n

#include<stdio.h>
\n#include<math.h>
\nint main()
\n{
\n int num;
\n int a[1000];
\n while(scanf("%d",&num)!=EOF)
\n {
\n int count = 0;
\n int countint =0;
\n float sum = 0;
\n for(int i =0;i<num;i++)
\n {
\n scanf("%d",&a[i]);
\n if(a[i]<0)
\n {
\n count++;
\n }
\n if(a[i]>0)
\n {
\n countint++;
\n sum+=a[i];
\n }
\n }
\n printf("%d %0.1f\\\\n",count,sum\/countint);
\n }
\n}<\/p>\n

\u9898\u76ee\u89e3\u6790：<\/p>\n