{"id":56755,"date":"2025-08-14T23:05:27","date_gmt":"2025-08-14T15:05:27","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/56755.html"},"modified":"2025-08-14T23:05:27","modified_gmt":"2025-08-14T15:05:27","slug":"%e6%88%91%e4%bb%8e%e9%9b%b6%e5%bc%80%e5%a7%8b%e5%ad%a6%e4%b9%a0c%e8%af%ad%e8%a8%80%ef%bc%889%ef%bc%89-%e8%a1%a8%e8%be%be%e5%bc%8fpart2","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/56755.html","title":{"rendered":"\u6211\u4ece\u96f6\u5f00\u59cb\u5b66\u4e60C\u8bed\u8a00\uff089\uff09- \u8868\u8fbe\u5f0fPart2"},"content":{"rendered":"

4.3 \u81ea\u589e\u8fd0\u7b97\u7b26\u548c\u81ea\u51cf\u8fd0\u7b97\u7b26<\/h3>\n

\u53d8\u91cf\u6700\u5e38\u7528\u7684\u4e24\u79cd\u8fd0\u7b97\u662f\u201c\u81ea\u589e1\u201c\u548c\u201c\u81ea\u51cf1\u201d\u3002\u53ef\u4ee5\u7528\u4e0b\u9762\u4ee3\u7801\u8868\u793a：<\/p>\n

i = i + 1;
\nj = j – 1;<\/p>\n

\u590d\u5408\u8d4b\u503c\u8fd0\u7b97\u7b26\u8868\u793a\u53ef\u4ee5\u628a\u8bed\u53e5\u7f29\u77ed：<\/p>\n

i += 1;
\nj -= 1;<\/p>\n

C\u8bed\u8a00\u5141\u8bb8\u4f7f\u7528++（\u81ea\u589e）\u548c–（\u81ea\u51cf）\u8fd0\u7b97\u7b26\u628a\u8bed\u53e5\u7f29\u5f97\u66f4\u77ed\u3002<\/p>\n

\u4f46\u662f，\u81ea\u589e\/\u51cf\u8fd0\u7b97\u7b26\u4ec5\u4ec5\u662f\u7528\u6765\u7f29\u77ed\u8bed\u53e5\u7684\u5417？Of Course NOT!<\/p>\n

\u5b9e\u9645\u4e0a++\u3001–\u8fd0\u7b97\u7b26\u53ef\u4ee5\u4f5c\u4e3a\u524d\u7f00(prefix）\u8fd0\u7b97\u7b26(++i\u3001–i），\u4e5f\u53ef\u4ee5\u4f5c\u4e3a\u540e\u7f00(postfix)\u8fd0\u7b97\u7b26\u4f7f\u7528（i++\u3001i–）\u4f7f\u7528，\u800c\u4e14\u4f7f\u7528\u5b83\u4eec\u90fd\u4f1a\u6539\u53d8\u64cd\u4f5c\u6570\u672c\u8eab\u7684\u503c\u3002<\/p>\n

\u6bd4\u5982\u8bf4++i，\u7ed3\u679c\u5c31\u662fi+1，\u4f46\u662f\u5b83\u6709\u4e2a\u526f\u4f5c\u7528\u662fi\u81ea\u8eab\u4f1a\u589e\u52a01\u3002\u6bd4\u5982\u8bf4：<\/p>\n

i = 1;
\nprintf("%d", ++i); \/\/ \u8f93\u51fa2
\nprintf("%d", i); \/\/ \u8f93\u51fa2<\/p>\n

\u7b97i++\u65f6，\u7ed3\u679c\u662fi，\u4f46\u662f\u968f\u540e\u5f15\u53d1i\u8fdb\u884c\u81ea\u589e\u3002\u6bd4\u5982\u8bf4：<\/p>\n

i = 1;
\nprintf("%d", i++); \/\/ \u8f93\u51fa1
\nprintf("%d", i); \/\/ \u8f93\u51fa2<\/p>\n

++i\u610f\u5473\u7740\u7acb\u5373\u81ea\u589ei，\u800ci++\u610f\u5473\u7740\u201c\u5148\u53d6i\u7684\u539f\u6765\u503c\u201d，\u7a0d\u540e\u518d\u81ea\u589ei\u3002\u7a0d\u540e\u662f\u591a\u4e45\u5462？\u4e00\u822c\u662f\u5728\u6267\u884c\u4e0b\u4e00\u6761\u8bed\u53e5\u6267\u884c\u524d\u8fdb\u884c\u81ea\u589e\u3002<\/p>\n

–\u8fd0\u7b97\u7b26\u540c\u7406\u53ef\u5f97\u3002<\/p>\n

i = 1;
\nprintf("i is %d\\\\n", –i); \/\/\u8f93\u51fa0
\nprintf("i is %d\\\\n", i); \/\/\u8f93\u51fa0<\/p>\n

i = 1;
\nprintf("i is %d\\\\n", i–); \/\/\u8f93\u51fa1
\nprintf("i is %d\\\\n", i); \/\/\u8f93\u51fa0<\/p>\n

\u5982\u679c\u540c\u4e00\u4e2a\u8868\u8fbe\u5f0f\u4e2d\u591a\u6b21\u4f7f\u7528++\u6216–\u8fd0\u7b97\u7b26，\u7ed3\u679c\u4f1a\u5f88\u96be\u7406\u89e3\u3002<\/p>\n

\u4f8b\u5982：<\/p>\n

i = 1;
\nj = 2;
\nk = ++i + j++;<\/p>\n

\u6267\u884c\u4e0a\u8ff0\u8bed\u53e5\u540e，i, j, k\u5206\u522b\u662f\u591a\u5c11\u5462？<\/p>\n

\u4e0a\u9762\u7684\u8bed\u53e5\u7b49\u4ef7\u4e3a：
\n\u00a0<\/p>\n

i = i + 1;
\nk = i + j;
\nj = j + 1;<\/p>\n

\u6700\u7ec8i = 2， j = 3，k =4；<\/p>\n

\u5982\u679c：<\/p>\n

i = 1;
\nj = 2;
\nk = i++ + j++;<\/p>\n

\u6700\u7ec8i = 2， j = 3，k = 3；<\/p>\n

\u8981\u8bb0\u4f4f：\u540e\u7f00++\/–\u6bd4\u4e00\u5143\u6b63\u8d1f\u53f7\u4f18\u5148\u7ea7\u9ad8，\u5de6\u7ed3\u5408\u3002<\/p>\n

\u524d\u7f00++\/–\u4e0e\u4e00\u5143\u6b63\u8d1f\u53f7\u4f18\u5148\u7ea7\u76f8\u540c，\u53f3\u7ed3\u5408\u3002<\/p>\n

\u7ec3\u4e60\u9898<\/h2>\n

\u53ea\u505a\u4e86\u4e24\u4e2a~<\/p>\n

1. \u7ed9\u51fa\u4e0b\u5217\u7a0b\u5e8f\u7247\u6bb5\u7684\u8f93\u51fa\u7ed3\u679c\u3002\u5047\u8bbei \u3001j \u548ck \u90fd\u662fint \u578b\u53d8\u91cf\u3002<\/p>\n

（a）<\/p>\n

i = 5; j = 3;
\nprintf("%d %d", i \/ j, i % j);<\/p>\n

\u5206\u6790：5 \/ 3，\u9664\u53f7\u4e24\u8fb9\u64cd\u4f5c\u6570\u90fd\u662f\u6574\u6570，\u6240\u4ee5\u7ed3\u679c\u4e5f\u662f\u6574\u6570，\u6240\u4ee55 \/ 3 = 1<\/p>\n

5 % 3，\u4f59\u6570\u662f2\u3002<\/p>\n

\u6240\u4ee5\u7ed3\u679c\u662f1 2\u3002<\/p>\n

\u9a8c\u8bc1：<\/p>\n

#include <stdio.h><\/p>\n

int main()
\n{
\nint i = 5, j = 3;
\nprintf("%d %d", i \/ j, i % j);
\nreturn 0;
\n}<\/p>\n

\"\"<\/p>\n

(b)<\/p>\n

i = 2; j = 3;
\nprintf("%d", (i + 10) % j);<\/p>\n

\u5206\u6790：i + 10\u7684\u7ed3\u679c\u662f2+10=12，j\u7684\u503c\u662f3\u3002\u6240\u4ee5\u6700\u540e\u7b97\u5f0f\u7b49\u4ef7\u4e8e12 % 3 \u4e3a0，\u80fd\u88ab3\u6574\u9664\u3002<\/p>\n

\u6240\u4ee5\u8f93\u51fa0\u3002<\/p>\n

\u9a8c\u8bc1：<\/p>\n

#include <stdio.h><\/p>\n

int main()
\n{
\nint i = 2, j = 3;
\nprintf("%d", (i + 10) % j);
\nreturn 0;
\n}<\/p>\n

\"\"<\/p>\n

(c)<\/p>\n

i = 7; j = 8; k = 9;
\nprintf("%d", (i + 10) % k \/ j);<\/p>\n

\u5206\u6790：\u5c06\u53d8\u91cf\u503c\u4e00\u6b21\u5e26\u5165，\u5f97\u5230(7 + 10) % 9 \/ 8\u3002\u5316\u7b8017 % 9 \/ 8，\u8fd9\u91cc\u662f\u5148\u7b97%\u8fd8\u662f\u5148\u7b97\/\u5462？\u7ecf\u8fc7\u67e5\u8be2\u4f18\u5148\u7ea7，\u662f\u5148\u7b97%\u518d\u7b97\/\u3002\u6240\u4ee5\u5f97\u52308 \/ 8 = 1\u3002<\/p>\n

\u6700\u540e\u8f93\u51fa 1\u3002<\/p>\n

\u9a8c\u8bc1：<\/p>\n

#include <stdio.h><\/p>\n

int main()
\n{
\nint i = 7, j = 8, k = 9;
\nprintf("%d", (i + 10) % k \/ j);
\nreturn 0;
\n}<\/p>\n

\"\"<\/p>\n

(d)<\/p>\n

i = 1; j = 2; k = 3;
\nprintf("%d", (i + 5) % (j + 2) \/ k);<\/p>\n

\u5206\u6790：\u76f4\u63a5\u53d8\u91cf\u503c\u5e26\u5165，(1 + 5) % (2 + 2) \/ 3 = 6 % 4 \/ 3，\u7b97\u5f972 \/ 3 = 0<\/p>\n

\u8f93\u51fa 0<\/p>\n

\u9a8c\u8bc1：<\/p>\n

#include <stdio.h><\/p>\n

int main()
\n{
\nint i = 1, j = 2, k = 3;
\nprintf("%d", (i + 5) % (j + 2) \/ k);
\nreturn 0;
\n}<\/p>\n

\"\"<\/p>\n

*2. \u5982\u679ci \u548c j \u90fd\u662f\u6b63\u6574\u6570，(-i) \/ j \u7684\u503c\u548c-(i \/ j) \u7684\u503c\u662f\u5426\u603b\u4e00\u6837？\u9a8c\u8bc1\u4f60\u7684\u7b54\u6848\u3002<\/p>\n

\u5982\u679ci,j\u90fd\u4e3aint\u7c7b\u578b，\u5b83\u4eec\u7684\u8fd0\u7b97\u8ddf\u6570\u5b66\u4e0a\u662f\u4e00\u81f4\u7684，\u90fd\u662f\u4e00\u6837\u7684\u3002<\/p>\n

\u82e5i\u6216j\u4e3aunsignd int\u7c7b\u578b，\u4e00\u4e2a\u53ef\u80fd\u4e3a\u8d1f\u503c，\u53e6\u4e00\u4e2a\u53d8\u6210\u5f88\u5927\u7684\u6b63\u6570，\u5c31\u4e0d\u4e00\u6837\u4e86\u3002<\/p>\n

\u7f16\u7a0b\u9898<\/h2>\n

1. \u7f16\u5199\u4e00\u4e2a\u7a0b\u5e8f，\u8981\u6c42\u7528\u6237\u8f93\u5165\u4e00\u4e2a\u4e24\u4f4d\u6570，\u7136\u540e\u6309\u6570\u4f4d\u7684\u9006\u5e8f\u6253\u5370\u51fa\u8fd9\u4e2a\u6570\u3002\u7a0b\u5e8f\u4f1a\u8bdd\u5e94\u7c7b\u4f3c\u4e0b\u9762\u8fd9\u6837：<\/p>\n

Enter a two-digit number: 28
\nThe reversal is: 82<\/p>\n

\u7528%d \u8bfb\u5165\u4e24\u4f4d\u6570，\u7136\u540e\u5206\u89e3\u6210\u4e24\u4e2a\u6570\u5b57\u3002\u63d0\u793a ：\u5982\u679cn \u662f\u6574\u6570，\u90a3\u4e48n % 10 \u662f\u4e2a\u4f4d\u6570，\u800cn \/ 10 \u5219\u662f\u79fb\u9664\u4e2a\u4f4d\u6570\u540e\u5269\u4e0b\u7684\u6570\u3002<\/p>\n

\u5206\u6790：n%10\u4fdd\u7559\u6570\u5b57n\u7684\u7b2c\u4e00\u4e2a\u5c3e\u6570，n\/10\u53bb\u6389\u6570\u5b57n\u7684\u7b2c\u4e00\u4e2a\u5c3e\u6570\u3002<\/p>\n

\u90a3\u4e48\u63a8\u5f97：n%\"10^a\"\u4fdd\u7559\u6570\u5b57n\u7684a\u4e2a\u5c3e\u6570，n\/\"10^a\"\u53bb\u6389\u6570\u5b57n\u7684a\u4e2a\u5c3e\u6570\u3002<\/p>\n

\u800c\u4e14\u6570\u5b57\u7684\u7ec4\u5408abc（\u5341\u8fdb\u5236） = 100 * a + 10 * b + c\u3002<\/p>\n

\u90a3\u4e48\u53ef\u4ee5\u5199\u5f97\u4ee3\u7801：<\/p>\n

#include <stdio.h><\/p>\n

int main()
\n{
\nint n, a, b, i;
\nprintf("Enter a two-digit number: ");
\nscanf("%d", &n);
\na = n \/ 10;
\nb = n % 10;
\ni = 10 * b + a;
\nprintf("The reversal is: %d", i);<\/p>\n

return 0;
\n}<\/p>\n

\"\"<\/p>\n

2. \u6269\u5c55\u4e0a\u9898\u4e2d\u7684\u7a0b\u5e8f\u4f7f\u5176\u53ef\u4ee5\u5904\u74063\u4f4d\u6570\u3002<\/p>\n

\u5206\u6790：\u5148\u53bb\u5c3e\u6570\u518d\u4fdd\u7559\u5c3e\u6570，\u6216\u5148\u4fdd\u7559\u5c3e\u6570\u518d\u53bb\u5c3e\u6570\u3002<\/p>\n

\u65b9\u6cd51（\u63a8\u8350）：<\/p>\n

#include <stdio.h><\/p>\n

int main()
\n{
\nint n, a, b, c, i;
\nprintf("Enter a three-digit number: ");
\nscanf("%d", &n);
\na = n \/ 100;
\nb = n \/ 10 % 10;
\nc = n % 10;
\ni = 100 * c + 10 * b + a;
\nprintf("The reversal is: %d", i);<\/p>\n

return 0;
\n}<\/p>\n

\u65b9\u6cd52：<\/p>\n

#include <stdio.h><\/p>\n

int main()
\n{
\nint n, a, b, c, i;
\nprintf("Enter a three-digit number: ");
\nscanf("%d", &n);
\na = n % 1000 \/ 100;
\nb = n % 100 \/ 10;
\nc = n % 10 \/ 1;
\ni = 100 * c + 10 * b + a;
\nprintf("The reversal is: %d", i);<\/p>\n

return 0;
\n}<\/p>\n

\"\"<\/p>\n

3. \u91cd\u65b0\u7f16\u5199\u7f16\u7a0b\u98982\u4e2d\u7684\u7a0b\u5e8f，\u4f7f\u65b0\u7a0b\u5e8f\u4e0d\u9700\u8981\u5229\u7528\u7b97\u672f\u5206\u5272\u5c31\u53ef\u4ee5\u663e\u793a\u51fa3\u4f4d\u6570\u7684\u9006\u5e8f\u3002\u63d0\u793a ：\u53c2\u80034.1\u8282\u7684upc.c \u7a0b\u5e8f\u3002<\/p>\n

\u5206\u6790：\u8fd9\u4e2a\u5c31\u662f\u5229\u7528scanf\u7684%1d\u683c\u5f0f\u7b26，\u4e00\u4e2a\u4e2a\u7684\u5b58\u5230\u53d8\u91cf\u518d\u7ec4\u5408\u3002<\/p>\n

#include <stdio.h><\/p>\n

int main()
\n{
\nint n, a, b, c, i;
\nprintf("Enter a three-digit number: ");
\nscanf("%1d%1d%1d", &a, &b, &c);
\ni = 100 * c + 10 * b + a;
\nprintf("The reversal is: %d", i);<\/p>\n

return 0;
\n}<\/p>\n

\"\"<\/p>\n

4. \u7f16\u5199\u4e00\u4e2a\u7a0b\u5e8f，\u8bfb\u5165\u7528\u6237\u8f93\u5165\u7684\u6574\u6570\u5e76\u6309\u516b\u8fdb\u5236（\u57fa\u6570\u4e3a8）\u663e\u793a\u51fa\u6765：<\/p>\n

Enter a number between 0 and 32767: 1953
\nIn octal, your number is: 03641<\/p>\n

\u8f93\u51fa\u5e94\u4e3a5\u4f4d\u6570，\u5373\u4fbf\u4e0d\u9700\u8981\u8fd9\u4e48\u591a\u6570\u4f4d\u4e5f\u8981\u5982\u6b64\u3002\u63d0\u793a ：\u8981\u628a\u4e00\u4e2a\u6570\u8f6c\u6362\u6210\u516b\u8fdb\u5236，\u9996\u5148\u5c06\u5176\u9664\u4ee58，\u6240\u5f97\u7684\u4f59\u6570\u662f\u516b\u8fdb\u5236\u6570\u7684\u6700\u540e\u4e00\u4f4d（\u672c\u4f8b\u4e2d\u4e3a1）；\u7136\u540e\u628a\u539f\u59cb\u7684\u6570\u9664\u4ee58，\u5bf9\u9664\u6cd5\u7ed3\u679c\u91cd\u590d\u4e0a\u8ff0\u8fc7\u7a0b，\u5f97\u5230\u5012\u6570\u7b2c\u4e8c\u4f4d\u3002<\/p>\n

\u5206\u6790：\u7ecf\u5178\u7684\u9664R\u53d6\u4f59\u6cd5\u3002<\/p>\n

#include <stdio.h><\/p>\n

int main()
\n{
\nint n, a, b, c, d, e;
\nprintf("Enter a number between 0 and 32767: ");
\nscanf("%d", &n);<\/p>\n

printf("In octal, your number is: " );
\na = n % 8; n = n \/ 8;
\nb = n % 8; n = n \/ 8;
\nc = n % 8; n = n \/ 8;
\nd = n % 8; n = n \/ 8;
\ne = n % 8; n = n \/ 8;
\nprintf("%d%d%d%d%d", e, d, c, b, a);
\nreturn 0;
\n}<\/p>\n

\"\"<\/p>\n

5. \u91cd\u51994.1\u8282\u7684upc.c \u7a0b\u5e8f，\u4f7f\u7528\u6237\u53ef\u4ee5\u4e00\u6b21\u8f93\u516511\u4f4d\u6570\u5b57，\u800c\u4e0d\u7528\u5148\u5f55\u51651\u4f4d，\u518d\u5f55\u51655\u4f4d，\u6700\u540e\u518d\u5f55\u51655\u4f4d\u3002<\/p>\n

Enter the first 11 digits of a UPC: 01380015173
\nCheck digit: 5<\/p>\n

\u5206\u6790：\u5408\u8d77\u6765\u5c31\u884c\u3002<\/p>\n

\/* Computes a Universal Product Code check digit *\/
\n#include <stdio.h>
\nint main(void)
\n{
\n int d, i1, i2, i3, i4, i5, j1, j2, j3, j4, j5, first_sum, second_sum, total;<\/p>\n

printf("Enter the first 11 digits of a UPC: ");
\n scanf("%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d", &d, &i1, &i2, &i3, &i4, &i5, &j1, &j2, &j3, &j4, &j5);<\/p>\n

first_sum = d + i2 + i4 + j1 + j3 + j5;
\n second_sum = i1 + i3 + i5 + j2 + j4;
\n total = 3 * first_sum + second_sum;
\n printf("Check digit: %d\\\\n", 9 – ((total – 1) % 10));
\n return 0;
\n}<\/p>\n

\"\"<\/p>\n

6. \u6b27\u6d32\u56fd\u5bb6\u4e0d\u4f7f\u7528\u5317\u7f8e\u768412\u4f4d\u901a\u7528\u4ea7\u54c1\u4ee3\u7801（UPC），\u800c\u4f7f\u752813\u4f4d\u7684\u6b27\u6d32\u5546\u54c1\u7f16\u7801（European Article Number, EAN）\u3002\u8ddfUPC\u4e00\u6837，\u6bcf\u4e2aEAN\u7801\u7684\u6700\u540e\u4e5f\u6709\u4e00\u4e2a\u6821\u9a8c\u4f4d\u3002\u8ba1\u7b97\u6821\u9a8c\u4f4d\u7684\u65b9\u6cd5\u4e5f\u7c7b\u4f3c：\u9996\u5148\u628a\u7b2c2\u4f4d\u3001\u7b2c4\u4f4d\u3001\u7b2c6\u4f4d\u3001\u7b2c8\u4f4d\u3001\u7b2c10\u4f4d\u548c\u7b2c12\u4f4d\u6570\u5b57\u76f8\u52a0；\u7136\u540e\u628a\u7b2c1\u4f4d\u3001\u7b2c3\u4f4d\u3001\u7b2c5\u4f4d\u3001\u7b2c7\u4f4d\u3001\u7b2c9\u4f4d\u548c\u7b2c11\u4f4d\u6570\u5b57\u76f8\u52a0；\u63a5\u7740\u628a\u7b2c\u4e00\u6b21\u52a0\u6cd5\u7684\u7ed3\u679c\u4e58\u4ee53，\u518d\u548c\u7b2c\u4e8c\u6b21\u52a0\u6cd5\u7684\u7ed3\u679c\u76f8\u52a0；\u968f\u540e，\u518d\u628a\u4e0a\u8ff0\u7ed3\u679c\u51cf\u53bb1；\u76f8\u51cf\u540e\u7684\u7ed3\u679c\u9664\u4ee510\u53d6\u4f59\u6570；\u6700\u540e\u75289\u51cf\u53bb\u4e0a\u4e00\u6b65\u9aa4\u4e2d\u5f97\u5230\u7684\u4f59\u6570\u3002\u4ee5G\u00fcll\u00fcoglu Turkish Delight Pistachio & Coconut\u4e3a\u4f8b，\u5176EAN\u7801\u4e3a8691484260008\u3002\u7b2c\u4e00\u4e2a\u548c\u4e3a6+1+8+2+0+0=17，\u7b2c\u4e8c\u4e2a\u548c\u4e3a8+9+4+4+6+0=31\u3002\u7b2c\u4e00\u4e2a\u548c\u4e58\u4ee53\u518d\u52a0\u4e0a\u7b2c\u4e8c\u4e2a\u548c\u5f97\u523082，\u51cf1\u5f97\u523081\u3002\u8fd9\u4e2a\u7ed3\u679c\u9664\u4ee510\u7684\u4f59\u6570\u662f1，\u518d\u75289\u51cf\u53bb\u4f59\u6570\u5f97\u52308，\u4e0e\u539f\u59cb\u7f16\u7801\u7684\u6700\u540e\u4e00\u4f4d\u4e00\u81f4\u3002\u8bf7\u4fee\u65394.1\u8282\u7684upc.c \u7a0b\u5e8f\u4ee5\u8ba1\u7b97EAN\u7684\u6821\u9a8c\u4f4d\u3002\u7528\u6237\u628aEAN\u7684\u524d12\u4f4d\u5f53\u4f5c\u4e00\u4e2a\u6570\u8f93\u5165：<\/p>\n

Enter the first 12 digits of an EAN: 869148426000
\nCheck digit: 8<\/p>\n

\u5206\u6790：\u8fd9\u9898\u4e0a\u7bc7\u6587\u7ae0\u505a\u8fc7，\u4f46\u9898\u76ee\u7ed9\u51fa\u7684\u7b97\u6cd5\u4f3c\u4e4e\u53c8\u6709\u70b9\u4e0d\u540c\u3002\u5c1d\u8bd5\u4e00\u4e0b\u5199\u4ee3\u7801：<\/p>\n

#include <stdio.h><\/p>\n

int main(void)
\n{
\nint i1, i2, i3, i4, i5, i6, i7, i8, i9, i10, i11, i12;
\nprintf("\u8bf7\u8f93\u5165\u5546\u54c1\u6761\u5f62\u7801（\u4e0d\u8f93\u5165\u6700\u540e\u4e00\u4f4d）：");
\nscanf("%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d",
\n&i1, &i2, &i3, &i4, &i5, &i6, &i7, &i8, &i9, &i10, &i11, &i12);
\nint A, B, C, check;
\nA = (i12 + i10 + i8 + i6 + i4 + i2) * 3;
\nB = (i11 + i9 + i7 + i5 + i3 + i1);
\nC = (A + B – 1) % 10;
\ncheck = 9 – C;
\nprintf("Check digit（\u6700\u540e\u4e00\u4f4d\u662f）: %d\\\\n", check);
\nreturn 0;
\n}<\/p>\n

\"\"<\/p>\n

\u660e\u5929\u5f00\u59cb\u5b66\u4e60\u7b2c\u4e94\u7ae0\u9009\u62e9\u8bed\u53e5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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