#include
#include
/*
1、编程解决如下问题:鸡翁一,值钱五;鸡母一,值钱三;鸡雏三,值钱一。
百钱买百鸡,问鸡翁,鸡母,鸡雏各几何?(20分)
*/
int main()
{
int rooster = 0,//公鸡
hen = 0, //母鸡
child = 0; //鸡雏
for (rooster = 0; rooster <= 20; rooster++)
{
for (rooster = 0; hen <= 33; hen++)
{
child = 100 - rooster - hen;
if (child >= 0 && 100 == (rooster * 5 + hen * 3 + child / 3 * 1))
{
printf("鸡翁: %d\t鸡母: %d\t鸡雏: %d\n", rooster, hen, child);
}
}
}
getch();
return 0;
}
int i;
for (i = 0; i < size; i++)
{
if (strcmp(tmp, art[i].word) == 0)
return i;//返回下标
}
return -1;
}
/*
2、编程实现:有二维数组a[3][3]={{1.3,2.7,3.6},{2,3,4.7},{3,4,1.27}},
将数组a的每一行元素均除以该行上绝对值最大的元素,按行输出新数组。(20分)
*/
#include
#include
int main()
{
float a[3][3] = {{1.3, 2.7, 3.6}, {2, 3, 4.7}, {3, 4, 1.27}},
max;
int i, j;
puts("处理前:");
for (i = 0; i < 3; i++)
{
for (j = 0; j < 3; j++)
{
printf("%6f ", a[i][j]);
}
putchar(10);
}
for (i = 0; i < 3; i++)
{
max = fabs(a[i][i]);
for (j = 1; j < 3; j++)
{
if (max < fabs(a[i][j]))
max = a[i][j];
}
for (j = 0; j < 3; j ++)
a[i][j] /= max;
}
puts("处理后:");
for (i = 0; i < 3; i++)
{
for (j = 0; j < 3; j++)
{
printf("%6f ", a[i][j]);
}
putchar(10);
}
return 0;
}
/*
3、编程:设x、y取值为区间[1,10]的整数, f(x,y)=(3x-2y)/(x+y),
求使f(x,y)取最小值的x1、y1,要求使用自定义函数实现f(x,y)功能。(20分)
*/
#include
#include
double getFx(int x, int y)
{
return (3 * x - 2 * y) / (x + y);
}
int main()
{
double fx = 100000, tmp = 0;
int x, y;
int minx, miny;
for (x = 1, y = 1; x <= 10 && y <= 10; x++, y++)
{
tmp = getFx(x, y);
if (fx - tmp > 1e-7)
{
fx = tmp;
minx = x;
miny = y;
}
}
printf("%d %d\n", minx, miny);
return 0;
}
/*
4、编写函数fun,其功能是:在字符串中所有数字字符
前加一个“*”字符,要求通过指针实现。(20分)
*/
#include
#include
#include
int main()
{
char str[200], *pBegin = str;
printf("输入一个串:\n");
gets(pBegin);
for (; *pBegin != '\0'; pBegin++)
{
if (*pBegin >= '1' && *pBegin <= '9')
{
putchar('*');
putchar(*pBegin);
}
else
putchar(*pBegin);
}
putchar(10);
getch();
return 0;
}
/*
5、编程:已知学生记录由学号和学习成绩构成,
N名学生的记录已存入结构体数组中,找出成绩最
低的学生,并输出这个学生的信息,已知学生信息如下。(20分)
A01,81;A02,89;A03,66;A04,87;A05,77
A06,90;A07,79;A08,61;A09,80;A10,71
*/
#include
#include
#include
typedef struct
{
char sno[5];
int score;
}Student;
int main()
{
Student stu[10] = {{"A01", 81}, {"A02", 89}, {"A03", 66}, {"A04", 87},
{"A05", 77}, {"A06", 90}, {"A07", 79}, {"A08", 61},
{"A09", 80}, {"A10", 71}};
int i, min = stu[0].score, index;
for (i = 1; i < 10; i++)
{
if (min > stu[i].score);
{
min = stu[i].score;
index = i;
}
}
printf("成绩最低的学生的信息:\n");
printf("%-5s %d\n", stu[index].sno, min);
getch();
return 0;
}
/*
5、编程:已知学生记录由学号和学习成绩构成,
N名学生的记录已存入结构体数组中,找出成绩最
低的学生,并输出这个学生的信息,已知学生信息如下。(20分)
A01,81;A02,89;A03,66;A04,87;A05,77
A06,90;A07,79;A08,61;A09,80;A10,71
*/
#include
#include
#include
typedef struct
{
char sno[5];
int score;
}Student;
int main()
{
Student stu[10] = {{"A01", 81}, {"A02", 89}, {"A03", 66}, {"A04", 87},
{"A05", 77}, {"A06", 90}, {"A07", 79}, {"A08", 61},
{"A09", 80}, {"A10", 71}};
int i, min = stu[0].score, index;
for (i = 0; i < 10; i++)
{
if (min > stu[i].score)
{
min = stu[i].score;
index = i;
}
}
printf("成绩最低的学生的信息:\n");
printf("%-5s %d\n", stu[index].sno, stu[index].score);
getch();
return 0;
}
/*
6、附加题:编写一个函数InverseByWord(char *sentence),
实现一个英文句子按单词逆序存放的功能,并给出测试程序。(50分)
如:This is an interesting programme.
逆序后变为:.programme interesting an is This
*/
#include
#include
#include
void InverseByWord(char *sentence)
{
int i, j = strlen(sentence) - 1, wordLen = 0;
int index = 0, len = j + 1;
char tmp[201];
if (sentence[j] == '.')
{
tmp[index++] = '.';
j--;
}
while (j >= 0)
{
wordLen = 0;
while (sentence[j] != ' ')
{
j --;
wordLen ++;
}
for (i = 0; i < wordLen; i++)
{
if (j >= 0)
tmp[index++] = sentence[j + i + 1];
}
while (sentence[j] == ' ')//去掉空格
{
tmp[index++] = sentence[j--];
}
}
strncpy(sentence, tmp, len);
}
int main()
{
char str[201];
int i = 0;
str[0] = ' ';
printf("输入一个字符串:\n");
gets(str+1);
InverseByWord(str);
printf("逆序后:\n");
puts(str);
getch();
return 0;
}