C语言入门谭浩强版

简单选择法排序

冒泡法排序

用数组和for循环进行学生成绩简单统计处理 例如：求个人平均分 学科平均分 单科最高分等

简单选择法

#include

#define N 10

void main()

{

int i,j,k,t;

int a[N];

printf("Input %d numbers :\n",N);

for(i=0;i

scanf("%d",&a[i]);

for(i=0;i

{

k=i;

for(j=i+1;j

if(a[k]>a[j])

k=j;

t=a[i];

a[i]=a[k];

a[k]=t;

}

printf("The sorted numbers are:\n");

for(i=0;i

printf("%d,",a[i]);

printf("\b \n");

}

冒泡法

#define N 10

#include

void main()

{int i,j,k,a[N];

printf("Input %d numbers\n",N);

for(i=0;i

scanf("%d",&a[i]);

printf("\n");

for(j=0;j

for(i=0;i

if(a[i]>a[i+1])

{

k=a[i];

a[i]=a[i+1];

a[i+1]=k;

}

printf("The sorted numbers are:\n");

for(i=0;i

printf("%d,",a[i]);

printf("\b \n");

}

用数组进行学生成绩简单统计处理(行列数 及 输出时的排版 可自行修改)

#include

#define m 3

#define n 4

void main()

{

int i,j,average,max,min,count_1=0,count_2=0,sum;

int a[m][n];

printf("Input each student's scores\n");

for(i=0;i

{ printf("student_%d:\n",i+1);

for(j=0;j

{

scanf("%d",&a[i][j]);

if(a[i][j]>=90)

count_1+=1;

if(a[i][j]<=60)

count_2+=1;

}

}

putchar('\n');

printf(" en ch PE IT average\n");

for(i=0;i

{

average=0;

sum=0;

printf("student_%d ",i+1);

for(j=0;j

{

sum+=a[i][j];

printf("%3d ",a[i][j]);

}

printf("%6d",sum/n);

putchar('\n');

}

printf("average ");

for(j=0;j

{

sum=0;

for(i=0;i

{

if(a[i][j]>a[i+1][j])

max=a[i][j];

else max=a[i+1][j];

if(a[i][j]

min=a[i][j];

else min=a[i+1][j];

}

for(i=0;i

sum+=a[i][j];

printf("%3d ",sum/m);

}

putchar('\n');

printf("max_score ");

for(j=0;j

printf("%3d ",max);

putchar('\n');

printf("min_score ");

fo

r(j=0;j

printf("%3d ",min);

putchar('\n');

printf("score>90 : %d\nscore<60 : %d\n",count_1,count_2);

}