一些简单的C语言程序代码

1、sca nf(%f%f%f, &a,&b,&c);if (a b)k = a;g = b;elsek = b;g = a;if (k c)/* 最大 */printf (n 最大的数=%5.2f,g); elseprintf (n 最大的数=%5.2f,c);判断三角形的形状#i nclude#in cludevoid mai n(void)printf(请输入三角形三边);由键盘任意输入1个4位数整数，分别输出其中 的个位、十位、百位、千位。/* expe 3-10 */#i nclude #in elude void mai n(void)int mun, a,b,c,d;scan f(%

2、d,&mun);a=mun / 1000;/* 千位 */b=(mun % 1000) / 100;/* 百位 */c=(mun % 100)/10;/* 十位 */d=(mun % 10);/* 个位 */printf(千位数字为=%dn,a);printf(百位数字为=%dn,b);printf(十位数字为=%dn,c);printf(个位数字为=%dn,d);由键盘任意输入3个数据，找出其中的最大数和 最小数。#in cludevoid mai n(void)float a,b,c,k,g;/* k 小 g 大*/printf (请输入三个数”)；float a,b,c,p,s,k1,k

3、2,k3;scan f(%f%f%f, &a, &b, &c);while (a + b c | b + c a | a + c b ) printf(不能构成三角形，请重新输入)scan f(%f%f%f, &a,& b, &c);k1 = a * a;k2 = b * b;k3 = c * c;if (a = b & b = c & c =a)printf(此三角形为等边三角形);else if (a = b | b = c | c =a)printf(此三角形为等腰三角形);else if (k1 = b * b + c * c) | (k2 = a * a + c * c) | (k3

4、 = a * a + b * b)printf(此三角形为直角三角形);elseprintf(此三角形为一般三角形);九九乘法表 整体#in clude void mai n(void)int i,j;prin tf(n); 打印菱形#in cludevoid mai n(void)int i,j,k;for (i = 1;i = 5;i +)for (j = 0;j 5 - i;j +)pri ntf( ! ); for (k = 1;k = 0;i -)for (j = 4 - i;j 0;j -)pri ntf( ! ); for (k = 2 * i ;k = 0;k -) pri n

5、tf( * ); prin tf(n); 找回文#i nclude#in cludefor (i = 1;i 10; i +)for(j = 1;j 10; j +)pri ntf(%5d,i * j); prin tf(n); 右半边#i nclude void mai n(void)int i,j;for (i = 1;i 10; i +)for(j = 1;j = i; j +) pri ntf(%5d,i * j); prin tf(n); 左半边#i nclude void mai n(void)int i,j;for (i = 1;i 10;i +)/* 最外层循环 */ for

6、(j = 1;j i; j+)/* 打空格 */ pri ntf( );for (j = 1;j = 10 - i;j +)/* 计算 */pri ntf(%5d,j * i); void mai n(void)char str80;int i,j,iStrle nstr,iFlag;printf(请输入字符串n);gets(str);iStrle nstr = strle n(str);for (i = 0 ,j = iStrle nstr - 1;i = j ;i +, j -) if (stri = strj)iFlag = 1; elseiFlag = 0;break; if (iFl

7、ag = 1)printf(输入的是回文！n); elseprintf(输入的不是回文！ n); 找名字指针法/*不用查找函数，用指针的方法*/#in cludevoid mai n(void)*(a + iPos) = iTem;char str1080,a80,*p10,*q = NULL; int i, j,iFlag = 0;/ int istrle nstr;printf(”请输入名字n”)； for ( i = 0 ; i 10; i +)gets(stri);printf(请输入想查找的名字n); gets(a);for (i = 0; i 10; i +)pi = stri;

8、q = a;for (i = 0; i 10; i + )iFlag = 0;j = 0;while(*(pi + j) & *(q + j)if (*(pi+ j) != *(q + j)break; j+;if (*(pi + j)= 0 & *(q + j) = 0) iFlag = 1;break; if (iFlag = 1)printf(FOUND !该名字的位置为 %d,i); elseprintf(NOT FOUND ! ); /*利用指针给10个数排序*/#i ncludeint main( void)int a10,*p = NULL ,iTem;int i,j,iPos

9、= 0;printf(请输入10个数n);for (i = 0; i 10; i +)sca nf(%d,&ai); p = a;for(i = 0; i 9; i +)iPos = i;for (j = i + 1 ; j 10 ;j +)if (aj aiPos)iPos = j;iTem = *(a + i);printf(排序之后的为);for (i = 0; i 10; i +)pri ntf(%4d,*(a + i); return 0; /*名字排序，从大到小*/#in clude#in cludevoid mai n(void)char a1010,cTemp10;int i,

10、j,iMax;printf(输入十个学生姓名：n); for(i = 0; i 10; i +)gets(ai);for(i = 0;i 10 ;i +)iMax = i;for(j = i + 1;j 10;j +)if(strcmp(aiMax,aj) 0) iMax = j;*(a + i) = *(a + iPos);if(iMax != i)*q+ = *p; int x,y;strcpy(cTemp,ai);*q = 0;printf（请输入两个数字n）;strcpy(ai,aiMax);puts(str);scan f(%d%d, &x,& y);strcpy(aiMax,cTe

11、mp);swap(x,y);函数作业（全部）printf（交换之后的数字是n）;/*交换器，引用全局变量*/prin tf(%dt%dt,x,y);printf（按照字典降序排序为：n）;方法一return 0;for(i = 0;i 10;i +)int a,b;puts(ai); void mai n(void)/*用函数找最大公约数*/*查找并删除某字符*/sca nf(%d%d, &a,& b);#in clude#in cludefun ();int maxd(i nt, in t);int mai n()prin tf(a=%d,b=%dn,a,b);int mai n()char

12、 str80,*p = NULL,*q;void fun( void)int a,b,d;char t;printf（请输入两个整数n）;printf（请输入字符串:n）;int c;scan f(%d%d,&a, &b);gets(str);c = a;d = maxd(a,b);printf（请输入想要删除的字符:n）;a = b;printf（这两个数的最大公约数为：%d,d）;t = getchar();b = c;return 0;p = str;q = str;方法二int maxd(i nt a,i nt b)for (p = str; *p != 0; p +)#i nclud

13、e#defi ne swap(x,y) int tmp=x;x=y;y=tmp;int m, n,k;if (*p != t)int mai n()if(ab)m = b;n = a;elsem = a;n = b;dok = m%n;m = n;n = k;while(n != 0);return(m);/*用函数统计*/#in cludeint ico un t(char* );int mai n()char str80;int m = 0;printf(”请输入字符串n); gets(str);m = ico un t(str);printf(字符串中数字的个数有：%d,m);retur

14、n 0;int ico un t(char *p)int k = 0;while( *p != 70)if (*p = O & *p = 9)k +;return k;/*排序函数*/#i nclude#in cludevoid iSort (in t,i nt);int mai n()int a10;int i;printf(请输入10个整数n);for (i = 0; i 10 ; i +)sca nf(%d,&ai); printf(从小到大排序为n); for (i = 0; i 10; i +) prin tf(%4d,ai); void iSort(i nt x,i nt n)in

15、t i,j,t,iPos;for (i = 0; i n - 1; i +)iPos = i;for (j = i + 1; j n; j +)if (xj xiPos) iPos =j ;if (iPos != i)t = xi;xi = xiPos; xiPos = t; /*用函数找素数*/#in cludeint iPrime(i nt);int mai n()int i,k = 0;iSort(a,10);for (i = 1; i 201; i += 2)int iCha nge(char *x)for (j = 0; j 4 ;j +)k = iPrime(i);pri ntf(

16、%3d,aij);if (k = 1)char *p;prin tf(n); prin tf(%dn,i); int n = 0;void cha nge(i nt x4)int iPrime(i nt x)p = x;for(;*p != 0; p +)int i,j,t;int a;n = n * 8 + *p - 0; for (a = 2; a = x/2; a +)for (i = 0;i 4; i +)/*用函数将矩阵转置if (x % a = 0)规定是方阵*/for (j = 0; j i; j +)return 0;#i ncludevoid cha nge(i nt4);t

17、 = xij;return 1; int mai n()xij = xji;xji = t; /*八进制转十进制*/int a44,b44=0;#in cludeint i,j;/*判断是否是对称矩阵int iCha nge(char*);printf（请输入一个四阶矩阵n）;以4*4的矩阵为例*/int mai n()for (i = 0; i 4; i +)#in cludeint dui(i nt4);char s10;for (j = 0; j 4 ;j +)int mai n()int i,k; scan f(%d,&aij);printf（请输入一个八进制的数）;int a44,i

18、,j,k = 0;gets(s);cha nge(a);printf（请输入一个四阶矩阵n”）;k = iCha nge(s);printf（转置过后的矩阵式n）;for (i = 0; i 4; i +)printf（对应的十进制的数位 =%d,k）;for (i = 0; i 4; i +)for (j = 0; j 4 ;j +)scan f(%d, &aij);float a,cosx,s inx;float fsin;printf(请输入 xn);fsin=sqrt(1 - (double)icos(a) * (double)icos(a);k = dui(a);sca nf(%f,

19、&a);return fsi n;if (k = 1)cosx = icos(a);pri ntf（该矩阵为对称矩阵）;sinx = isi n( a);/*int n = 3;elseprin tf(cos(x)=%7.2fn,cosx);float t,k,fs in;pri ntf（该矩阵不是对称阵）;prin tf(si n(x)=%7.2fn,si nx);k = 0;t = 1;int dui(i nt x4)float icos(float a)doint i,j,t = 0;int n = 2;t *= (-1) * a * a / (n * (n - 1);for (i =

20、0;i 4; i +)float t,k,fcos;k += t;k = 0;n += 2;for (j = 0; j = 1e-6);if (xij = xji)fsin =1 + k;t = 1; t *= (-1) * a * a / (n *( n - 1);return fsi n;*/return t;k += t;n += 2;/*用函数分别统计26个字母的个数*/*用函数求 cos与sin*/#in clude#in cludewhile (fabs(t) = 1e-6);void jishu(char str);#in cludefcos = 1 + k;int iCou n

21、t126 = 0;float icos(float);return fcos;void mai n(void)float isin( float);int mai n()float isin( float a)char str80;int i;printf(”请输入字符串”)；gets(str);jishu(str);printf(26个大写字母的个数分别是n);/*循环移位通过位或运算来实现循环的功能 */#i ncludevoid mai n（void）dst = 0;/加密后 code = 1234;/ 密码 printf(请输入明文：n); scan f(%d, &stc);dst =

22、 stc a code;for (i = 0; i 26; i +)int a,n;printf（n加密之后的文件是：%dn,dst）;pri ntf(%dn,iCou nt1i);printf（请输入一个整数：n）;return 0;sca nf(%d,&a);void jishu(char x)printf（请输入移动的位数：n）;/*偶数为清零*/printf（注意：正数代表右移，负数代表左移#in cludeint i;);void mai n(void)for (i = 0; xi != 0; i +)sca nf(%d,&n);if(n 0)int a;if (xi = A & x

23、i n) | (a (8 * sizeof(int) - n);/ 右移scan f(%d, &a);a = a & 0x5555;位运算if(n 0)prin tf(%xn,a);/*地位字节按位取反*/a = (a (8 * sizeof(int)-(-#in cluden);/ 左移/*十六进制转二进制*/void mai n(void)prin tf(%un,a);#in cludevoid mai n(void)un sig ned int x;/*利用位异或运算加密*/printf（请输入数据：）;#i ncludeint a,b32,c = 1,i;scan f(%d，& x);

24、int mai n()scan f(%x,&a);x = x A OXOOff;for(i = 0; i i;q-fareYF=p-fareJB+p-fareYJ;gets(per- n am);c fareSF=q-fareYF-q-fareBX-q-fareSD;scan f(%d%d%f%f%f%f, &per-ch,&per-year，&per-fareJB, &per-fareYJ,&per-fareBX, &per-fafor(i = 31; i = 0; i -)for(q=p;qfareYF,q-fareSF);PRINTF(perso n);#in clude #defi n

25、e N 1void PRINTF(struct man *p)struct man部门销售情况管理程序struct man *q=p;#in cludelong ch;printf（职工工号t姓名t年龄t基本工资t#defi ne N 1char n am10;业绩工资t应发工资t保险费tt水电费tstruct bume nint year;实发工资tn）;float fareJB;for(q=p;qch,q- nam,q-year,q-ffloat ave;float fareSD;areJB,q-fareYJ,q-fareYF,q-fareBX,q-fareSD,q-ffloat fare

26、SF;areSF);aN; void chazhao(struct bume n *p)void fare(struct man *p)void mai n(void)long NUM;struct man *q;struct man pers on N,*per;int i;for(q=p;qp+N;q+)printf（输入员工信息”）；printf（输入要查找的部门的代码：”）；for(per=pers on; perpers on+N;per+)scan f(%ld,&NU M);prin tf(n);for(i=0;i nu m=NUM)break;printf(”部门代码t部门名称t

27、春季销售额t 夏季销售额t秋季销售额t冬季销售额t平均值 n ”)；prin tf(%ldt%6stt%8.2lft%8.2lft%8.2lft%8.2lft%8.2lft n,p- nu m,p- name,p-get0,p-get1,p-get2,p- get3,p-ave);void qiuave(struct bume n *p)int i,j;float sum=0;for(i=0;iN;i+)for(j=0;j4;j+)sum=sum+pi.getj; pi.ave=sum/4; void order(struct bume n *p)struct bume n *mi n,P;i

28、nt i,j,k;for(i=0;iN-1;i+)min=πfor(j=i+1;jN;j+)if(pj.aveave)mi n=&pj;P=pi;pi=*mi n;*mi n=P;printf(部门代码t部门名称t春季销售额t 夏季销售额t秋季销售额t冬季销售额t平均值n ”)；for(k=0;kN;k+)prin tf(%ldt %6stt%8.2lft%8.2lft%8.2 lft%8.2lft%8.2lft n”,pk. nu m,pk. name,pk.get0,pk.get1,pk.g et2,pk.get3,pk.ave);void mai n(void)int i,j, n

29、,x;float t;printf(输入部门数据);for(i=0;iN;i+)sca nf(%ld,&ai. nu m);sca nf(%s, &ai. name); for(j=0;j4;j+) scan f(%f, &t);ai.getj=t;printf(1.输入部门代码或部门名称，查找此 部门的销售情况n2.计算各部门的平均销售额。 n3.将销售情况表按各部门的平均销售额由高到 低排序n”)；for(x=0;x3;x+)printf(输入调用的函数序号:);sca nf(%d,&n);prin tf(n);switch( n)case 1:chazhao(a);break;case

30、2:qiuave(a);break;case 3:order(a);break; 链表/*与链表相关*/#in clude#in clude#defi ne SIZE sizeof(struct Note)struct Noteint value; struct Note *pNext;/*原型声明*/struct Note * Creatlist(void);int Traverlist(struct Note * );int searchlist(struct Note * ,in t);int Deletelist(struct Note *,i nt);void Prin tlist(

31、struct Note * );/*主函数*/void mai n(void)int a,k,l,m;int iFoun d,iDelete;struct Note *num;num = Creatlist();while (1)printf(1.统计n2.查找n3.插入n4.删除 n5.打印n6.退出n请输入以选择：n);scan f(%d,&a);if (a = 1)k = Traverlist( nu m);printf(整型数据的个数是：%dn,k);if (a = 2)printf(请输入想要查找的数:); scan f(%d，&i Fou nd);l = searchlist (n

32、u m,iF oun d);if (l = 1)prin tf(4O4 NOT FOUNDn);if (a = 3)pri ntf(404 NOT FOUNDn);if (a = 4)printf(请输入想删除的项目); scan f(%d,iDelete);m =Deletelist (num , iDelete); if (m = 0)printf(删除成功 n); elseprintf(删除失败 n);if (a = 5)void Prin tlist( nu m); if (a = 6)exit(1);/*主函数到此结束*/struct Note * Creatlist(void)/

33、建立链表struct Note *spHead,*spPre,*spCur;int a;spPre = (struct Note *)malloc(SIZE);spHead = spPre;spHead - pNext = NULL;dosca nf(%d,&a);if (a != 0)spCur = (struct Note *)malloc(SIZE) spCur - value = a; spCur - pNext = NULL; spPre - pNext = spCur; spPre = spCur;while(a != 0);/以输入0作为结束 retur n spHead; in

34、t Traverlist(struct Note * sp)/ 统计struct Note *spCur;int b = 0;spCur = sp - pNext;while(spCur != NULL )b +;spCur = spCur - pNext;return b;int searchlist(struct Note *sp,i nt x)/ 查找struct Note *spCur;spCur = sp - pNext;while (spCur - pNext != NULL & spCur - value != x)spCur = spCur - pNext; if (spCur

35、 - value = x)prin tf(THE NUMBER IS %d,spCur - value); return 0;elsereturn 1;int Deletelist(struct Note *sp,i nt x)/ 删除struct Note *spCur,*spT;spCur = sp;while(spCur - pNext != NULL & spCur - pNext - value != x)spCur = spCur -pNext; if (spCur - pNext = NULL)return 1; spT = spCur - pNext;spCur - pNext

36、 = spCur - pNext - pNext; free(spT);return 0; void Prin tlist(struct Note *sp)struct Note *spCur;spCur = sp - pNext;printf(链表中的整型数据为：/n);while (spCur != NULL)prin tf(%dn ,spCur - value); spCur = spCur - pNext;prin tf(n);学生成绩1.0版本/*五个学生四门功课成绩排名感觉像是回到了高中=。=第一次录入时，总分，均分输入0！ */#in clude#defi ne swap(x,y

37、) int tmp=x;x=y;y=tmp;/*定义了一个交换器函数不然感觉很烦人*/void mai n(void)int iCj57=0;int i,j,k;int iPos,iTem = 0;printf(请依次输入五位学生的学号和各科成绩n);pri ntf(%dt,iCjij);for (i = 0; i 5; i +)prin tf(n); sca nf(%ld，& sti. num);gets(sti. name);for (j = 0; j 7; j +)/*学生成绩系统2.0*/for (j = 0;j 2; j +)scan f(%d, &iCjij);#defi ne N

38、 3#i ncludescan f(%f, &t);for (i = 0; i 5; i + )sti.scorej = t;struct stude ntfor (j = 1; j 5; j + )/* 第一列是学号-。-*/*完成了输入数据的工作*/long num;iPos = high(st);/* 找最好 */iCji5 += iCjij;char n ame20;printf（学号 姓名t成绩1t成绩2n）;iCji6 = iCji5 / 4 ;/* 真正的总分和均分*/float score2;prin tf(%ld %st,stiPos. nu m,stiPos. name);

39、stN,*p;for (j = 0; j 2; j +)pri ntf(%ft,stiPos.scorej); for (i = 0; i 4; i +)int high(struct stude nt *);prin tf(n);void ave(struct stude nt * ,int *);ave（st,iAve）;/*两门成绩都在平均分以下的 */iPos = i;#defi ne swap(x,y) struct stude nt tmp = x; x = y; y =printf(学号姓名 tn);for(j = i + 1; j 5; j +)tmp;for (i = 0;i

40、 iCjiPos5)void mysort(struct stude nt stN);iPos = j;void mai n(void)if (iAvei != 0)for (k=0;k7;k+)pri ntf(%ld %st,s ti.nu m,sti. name); swap(iCjik,iCjiPosk);int i,j,iPos,iAveN;prin tf(n);float t;for (i = 0; i 5; i +)p = st;mysort(st);printf（请录入学生的各项信息n）;printf（学号 姓名t成绩1t成绩2n）;for (j = 0; j 7; j + )f

41、or (i = 0; i N; i +)for (i = 0;i N; i +)prin tf(%ld %st,sti. nu m,sti. name);for (j = 0; j 2; j +)prin tf(%ft,s ti. scorej); prin tf(n);/*主函数到此结束 */*找最好成绩*/int high(struct stude nt *x)int i,iPos = 0;float cN;for (i = 0; i sti.score1)sti.score0 : sti.score1;iPos = 0;for (i = 1; i ciPos)iPos =i;return

42、 iPos;/*找在平均分以下的*/void ave(struct stude nt stN, i nt *x)float ave1 = 0,ave2 = 0;int i;for (i = 0; i N; i +)ave1 = sti.score0;ave2 = sti.score1;ave1 = ave1 / N;ave2 = ave2 / N;for (i = 0; i N; i +)if (sti .score0 = ave1 & sti.score1 =ave2) xi = i;/*以第一门课的成绩排名*/void mysort(struct stude nt stN)int i,j,iPos = 0;for (i = 0; i N - 1; i +)iPos = 0;for (j = i + 1; j N; j +)if (sti.scorei sti.scoreiPos) iPos = i;swap(sti,stiPos);/*学生成绩3.0文件版录入统计三科成绩 */#in clude#in clude#defi ne N 5struct stude ntchar n ame20;long ID;