#include <stdioh>
#include <stdlibh>
#include <stringh>
#define MAX_NUM 50
#define MAX_LINE 256
struct student {
char name[10];
float math;
float chinese;
float eng;
float aver;
char grade;
};
const char student_file = "studenttxt";
const char grade_file = "gradetxt";
int init(struct student s, int n);
int fun(struct student s[], int n);
void sort(struct student s, int n);
void display(struct student s, int n);
void save_student(struct student s, int n, const char file);
void load_student(const char file);
int main(int argc, char argv[])
{
int num = 0;
struct student st[MAX_NUM];
num = init(st, MAX_NUM);
printf("\n等级为D的人数: %d\n", fun(st, num));
save_student(st, num, student_file);
sort(st, num);
save_student(st, num, grade_file);
display(st, num);
load_student(student_file);
printf("\n排序后的学生信息\n");
load_student(grade_file);
return 0;
}
/ 初始化 /
int init(struct student s, int n)
{
int num = 0, i = 0;
if (0 == s || 0 >= n || MAX_NUM < n)
return 0;
printf("请输入学生数量[不大于50]: ");
fflush(stdout);
scanf("%d", &num);
while (0 >= num || n < num)
{
fflush(stdin);
printf("无效的参数,请输入学生数量[不大于50]: ");
fflush(stdout);
scanf("%d", &num);
}
for (i = 0; i < num; ++i)
{
printf("请输入第%d个学生的信息: ", i + 1);
fflush(stdout);
scanf("%9s %f %f %f", s[i]name, &s[i]math, &s[i]chinese, &s[i]eng);
fflush(stdin);
}
return num;
}
/ 计算平均成绩并统计等级为D的人数 /
int fun(struct student s[], int n)
{
int i = 0, cnt = 0;
if (0 == s || 0 >= n || MAX_NUM < n)
return 0;
for (i = 0; i < n; ++i)
{
s[i]aver = (s[i]math + s[i]chinese + s[i]eng) / 30;
if (70 <= s[i]aver && 85 > s[i]aver)
s[i]grade = 'B';
else if (60 <= s[i]aver && 70 > s[i]aver)
s[i]grade = 'C';
else if (60 > s[i]aver)
s[i]grade = 'D';
else
s[i]grade = 'A';
if ('D' == s[i]grade)
++cnt;
}
return cnt;
}
/ 降序排列 /
void sort(struct student s, int n)
{
int i = 0, j = 0;
struct student tmp;
if (0 == s || 0 >= n || MAX_NUM < n)
return 0;
for (i = 0; i < n - 1; ++i)
{
for (j = 0; j < n - 1 - i; ++j)
{
if (s[j]aver < s[j + 1]aver)
{
tmp = s[j];
s[j] = s[j + 1];
s[j + 1] = tmp;
}
}
}
}
void display(struct student s, int n)
{
int i = 0;
if (0 == s || 0 >= n || MAX_NUM < n)
return 0;
printf("所有学生的信息如下: \n");
for (i = 0; i != n; ++i)
{
printf("%d name[%s] math[%1f] chinese[%1f] eng[%1f] aver[%1f] grade[%c]\n",
i + 1, s[i]name, s[i]math, s[i]chinese, s[i]eng, s[i]aver, s[i]grade);
}
}
/ 保存学生信息到指定文件 /
void save_student(struct student s, int n, const char file)
{
int i = 0;
FILE fp = 0;
char buf[MAX_LINE] = {0};
if (0 == s || 0 >= n || MAX_NUM < n || 0 == file)
return 0;
if (fp = fopen(file, "w"))
{
for (i = 0; i != n; ++i)
{
sprintf(buf, "%s %1f %1f %1f %1f %c\r\n",
s[i]name, s[i]math, s[i]chinese, s[i]eng, s[i]aver, s[i]grade);
fwrite(buf, 1, strlen(buf), fp);
memset(buf, 0x00, MAX_LINE);
}
fclose(fp);
}
}
/ 加载指定文件中的信息 /
void load_student(const char file)
{
char buf[MAX_LINE] = {0};
FILE fp = 0;
if (0 == file)
return ;
if (fp = fopen(file, "r"))
{
while (fgets(buf, MAX_LINE, fp))
printf("%s", buf);
fclose(fp);
}
}
下面是一个比较三个数的例子:
#include <stdioh>
int main()
{
int t,a,b,c;
scanf("%d%d%d",&a,&b,&c);
if(a<b)
{
t=a,a=b,b=t;
}
if(a<c)
{
t=a,a=c,c=t;
}
if(b<c)
{
t=b, b=c, c=t;
}
printf("%d %d %d\n",c,b,a);
return 0;
}
原理就是运用冒泡算法,把最大的数浮在最上面,而小的数就下沉,最后就输出。
"扫雷"小游戏C代码
#include<stdioh>
#include<mathh>
#include<timeh>
#include<stdlibh>
main( )
{char a[102][102],b[102][102],c[102][102],w;
int i,j; /循环变量/
int x,y,z[999]; /雷的位置/
int t,s; /标记/
int m,n,lei; /计数/
int u,v; /输入/
int hang,lie,ge,mo; /自定义变量/
srand((int)time(NULL)); /启动随机数发生器/
leb1: /选择模式/
printf("\n 请选择模式:\n 1标准 2自定义\n");
scanf("%d",&mo);
if(mo==2) /若选择自定义模式,要输入三个参数/
{do
{t=0; printf("请输入\n行数 列数 雷的个数\n");
scanf("%d%d%d",&hang,&lie,&ge);
if(hang<2){printf("行数太少\n"); t=1;}
if(hang>100){printf("行数太多\n");t=1;}
if(lie<2){printf("列数太少\n");t=1;}
if(lie>100){printf("列数太多\n");t=1;}
if(ge<1){printf("至少要有一个雷\n");t=1;}
if(ge>=(hanglie)){printf("雷太多了\n");t=1;}
}while(t==1);
}
else{hang=10,lie=10,ge=10;} /否则就是选择了标准模式(默认参数)/
for(i=1;i<=ge;i=i+1) /确定雷的位置/
{do
{t=0; z[i]=rand( )%(hanglie);
for(j=1;j<i;j=j+1){if(z[i]==z[j]) t=1;}
}while(t==1);
}
for(i=0;i<=hang+1;i=i+1) /初始化a,b,c/
{for(j=0;j<=lie+1;j=j+1) {a[i][j]='1'; b[i][j]='1'; c[i][j]='0';} }
for(i=1;i<=hang;i=i+1)
{for(j=1;j<=lie;j=j+1) {a[i][j]='+';} }
for(i=1;i<=ge;i=i+1) /把雷放入c/
{x=z[i]/lie+1; y=z[i]%lie+1; c[x][y]='#';}
for(i=1;i<=hang;i=i+1) /计算b中数字/
{for(j=1;j<=lie;j=j+1)
{m=48;
if(c[i-1][j-1]=='#')m=m+1; if(c[i][j-1]=='#')m=m+1;
if(c[i-1][j]=='#')m=m+1; if(c[i+1][j+1]=='#')m=m+1;
if(c[i][j+1]=='#')m=m+1; if(c[i+1][j]=='#')m=m+1;
if(c[i+1][j-1]=='#')m=m+1; if(c[i-1][j+1]=='#')m=m+1;
b[i][j]=m;
}
}
for(i=1;i<=ge;i=i+1) /把雷放入b中/
{x=z[i]/lie+1; y=z[i]%lie+1; b[x][y]='#';}
lei=ge; /以下是游戏设计/
do
{leb2: /输出/
system("cls");printf("\n\n\n\n");
printf(" ");
for(i=1;i<=lie;i=i+1)
{w=(i-1)/10+48; printf("%c",w);
w=(i-1)%10+48; printf("%c ",w);
}
printf("\n |");
for(i=1;i<=lie;i=i+1){printf("---|");}
printf("\n");
for(i=1;i<=hang;i=i+1)
{w=(i-1)/10+48; printf("%c",w);
w=(i-1)%10+48; printf("%c |",w);
for(j=1;j<=lie;j=j+1)
{if(a[i][j]=='0')printf(" |");
else printf(" %c |",a[i][j]);
}
if(i==2)printf(" 剩余雷个数");
if(i==3)printf(" %d",lei);
printf("\n |");
for(j=1;j<=lie;j=j+1){printf("---|");}
printf("\n");
}
scanf("%d%c%d",&u,&w,&v); /输入/
u=u+1,v=v+1;
if(w!='#'&&a[u][v]=='@')
goto leb2;
if(w=='#')
{if(a[u][v]=='+'){a[u][v]='@'; lei=lei-1;}
else if(a[u][v]=='@'){a[u][v]=''; lei=lei+1;}
else if(a[u][v]==''){a[u][v]='+';}
goto leb2;
}
a[u][v]=b[u][v];
leb3: /打开0区/
t=0;
if(a[u][v]=='0')
{for(i=1;i<=hang;i=i+1)
{for(j=1;j<=lie;j=j+1)
{s=0;
if(a[i-1][j-1]=='0')s=1; if(a[i-1][j+1]=='0')s=1;
if(a[i-1][j]=='0')s=1; if(a[i+1][j-1]=='0')s=1;
if(a[i+1][j+1]=='0')s=1; if(a[i+1][j]=='0')s=1;
if(a[i][j-1]=='0')s=1; if(a[i][j+1]=='0')s=1;
if(s==1)a[i][j]=b[i][j];
}
}
for(i=1;i<=hang;i=i+1)
{for(j=lie;j>=1;j=j-1)
{s=0;
if(a[i-1][j-1]=='0')s=1; if(a[i-1][j+1]=='0')s=1;
if(a[i-1][j]=='0')s=1; if(a[i+1][j-1]=='0')s=1;
if(a[i+1][j+1]=='0')s=1; if(a[i+1][j]=='0')s=1;
if(a[i][j-1]=='0')s=1; if(a[i][j+1]=='0')s=1;
if(s==1)a[i][j]=b[i][j];
}
}
for(i=hang;i>=1;i=i-1)
{for(j=1;j<=lie;j=j+1)
{s=0;
if(a[i-1][j-1]=='0')s=1; if(a[i-1][j+1]=='0')s=1;
if(a[i-1][j]=='0')s=1; if(a[i+1][j-1]=='0')s=1;
if(a[i+1][j+1]=='0')s=1; if(a[i+1][j]=='0')s=1;
if(a[i][j-1]=='0')s=1; if(a[i][j+1]=='0')s=1;
if(s==1)a[i][j]=b[i][j];
}
}
for(i=hang;i>=1;i=i-1)
{for(j=lie;j>=1;j=j-1)
{s=0;
if(a[i-1][j-1]=='0')s=1; if(a[i-1][j+1]=='0')s=1;
if(a[i-1][j]=='0')s=1; if(a[i+1][j-1]=='0')s=1;
if(a[i+1][j+1]=='0')s=1;if(a[i+1][j]=='0')s=1;
if(a[i][j-1]=='0')s=1; if(a[i][j+1]=='0')s=1;
if(s==1)a[i][j]=b[i][j];
}
}
for(i=1;i<=hang;i=i+1) /检测0区/
{for(j=1;j<=lie;j=j+1)
{if(a[i][j]=='0')
{if(a[i-1][j-1]=='+'||a[i-1][j-1]=='@'||a[i-1][j-1]=='')t=1;
if(a[i-1][j+1]=='+'||a[i-1][j+1]=='@'||a[i-1][j+1]=='')t=1;
if(a[i+1][j-1]=='+'||a[i+1][j-1]=='@'||a[i+1][j-1]=='')t=1;
if(a[i+1][j+1]=='+'||a[i+1][j+1]=='@'||a[i+1][j+1]=='')t=1;
if(a[i+1][j]=='+'||a[i+1][j]=='@'||a[i+1][j]=='')t=1;
if(a[i][j+1]=='+'||a[i][j+1]=='@'||a[i][j+1]=='')t=1;
if(a[i][j-1]=='+'||a[i][j-1]=='@'||a[i][j-1]=='')t=1;
if(a[i-1][j]=='+'||a[i-1][j]=='@'||a[i-1][j]=='')t=1;
}
}
}
if(t==1)goto leb3;
}
n=0; /检查结束/
for(i=1;i<=hang;i=i+1)
{for(j=1;j<=lie;j=j+1)
{if(a[i][j]!='+'&&a[i][j]!='@'&&a[i][j]!='')n=n+1;}
}
}
while(a[u][v]!='#'&&n!=(hanglie-ge));
for(i=1;i<=ge;i=i+1) /游戏结束/
{x=z[i]/lie+1; y=z[i]%lie+1; a[x][y]='#'; }
printf(" ");
for(i=1;i<=lie;i=i+1)
{w=(i-1)/10+48; printf("%c",w);
w=(i-1)%10+48; printf("%c ",w);
}
printf("\n |");
for(i=1;i<=lie;i=i+1){printf("---|");}
printf("\n");
for(i=1;i<=hang;i=i+1)
{w=(i-1)/10+48; printf("%c",w);
w=(i-1)%10+48; printf("%c |",w);
for(j=1;j<=lie;j=j+1)
{if(a[i][j]=='0')printf(" |");
else printf(" %c |",a[i][j]);
}
if(i==2)printf(" 剩余雷个数");
if(i==3)printf(" %d",lei); printf("\n |");
for(j=1;j<=lie;j=j+1) {printf("---|");}
printf("\n");
}
if(n==(hanglie-ge)) printf("你成功了!\n");
else printf(" 游戏结束!\n");
printf(" 重玩请输入1\n");
t=0;
scanf("%d",&t);
if(t==1)goto leb1;
}
/注:在DEV c++上运行通过。行号和列号都从0开始,比如要确定第0行第9列不是“雷”,就在0和9中间加入一个字母,可以输入0a9三个字符再按回车键。3行7列不是雷,则输入3a7回车;第8行第5列是雷,就输入8#5回车,9行0列是雷则输入9#0并回车/
学习C语言,我想应当首先手头有一本入门教材,如果有条件用计算机的话,在计算机上安装TC程序。
前面的基本内容我想你自己会学好学会的,关键就是在指针以后的内容比较复杂抽象,需要下一番功夫才行呀。
如果有什么问题可以在网上线我留言。QQ360795604
在C语言中的进制表示方法
%c 一个字符
%d 十进制整数
%o 八进制整数
%x 十六进制整数
%X 同上
%c 一个字符
%s 一个字符串,遇空格、制表符或换行符结束。
%f 实数,可以用小数形式或指数形式输入。 程序:#include<stdioh>
int main()
{
int i;
for(i=33;i<=126;i++)
{
printf("十进制:%d 八进制:%o 十六进制: %x\n",i,i,i);
}
return 0;
}
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