請問?C語言的這裡要怎ㄇ寫下去..???

各位大大~~我又來請教各位了.....小弟愚昧~~~請多多見諒....QQ"........
這個程式5ㄍ學生比較數學.英文.電算的成績.跟比較名次...5ㄍ人我不知道怎ㄇ比~"~??還有%d 怎ㄇ讓他顯示出來的是小數點~~比較出來的成績怎ㄇ把他丟到陣列去然後一起顯示出來~"~??
#include<stdio.h>

void main()

{
int grade[5][3] = {
{80,88,93},
{76,74,81},
{58,66,64},
{63,73,71},
{77,92,90}};

int i , j , sum1,sum2,sum3,sum4,sum5;
int ave1,ave2,ave3,ave4,ave5;
for (i=0;i<5;i++)
{
for(j=0;j<3;j++)
{
printf("%-3d",grade[i][j]);
}
printf("\n");
}
sum1 = grade[0][0] + grade[0][1] + grade[0][2];
ave1 = sum1/3;
sum2 = grade[1][0] + grade[1][1] + grade[1][2];
ave2 = sum2/3;
sum3 = grade[2][0] + grade[2][1] + grade[2][2];
ave3 = sum3/3;
sum4 = grade[3][0] + grade[3][1] + grade[3][2];
ave4 = sum4/3;
sum5 = grade[4][0] + grade[4][1] + grade[4][2];
ave5 = sum5/3;
printf("The first student's average is ===>%d \n",ave1);
printf("The second student's average is ===>%d \n",ave2);
printf("The third student's average is ===>%d \n",ave3);
printf("The fourth student's average is ===>%d \n",ave4);
printf("The fifth student's average is ===>%d \n",ave5);
{
int sum6,sum7,sum8;
int ave6,ave7,ave8;
sum6 = grade[0][0] + grade[1][0] + grade[2][0] + grade[3][0] + grade[4][0];
ave6 = sum6/5;
sum7 = grade[0][1] + grade[1][1] + grade[2][1] + grade[3][1] + grade[4][1];
ave7 = sum7/5;
sum8 = grade[0][2] + grade[1][2] + grade[2][2] + grade[3][2] + grade[4][2];
ave8 = sum8/5;
printf("The all class's Math average is ===>%d \n",ave6);
printf("The all class's English average is ===>%d \n",ave7);
printf("The all class's Electronics average is ===>%d \n",ave8);
}
}

[不知道]

>>還有%d 怎ㄇ讓他顯示出來的是小數點
我記得好像是加%3.2d的樣子

其他的要仔細研究才行ㄋㄟ

<不確定,試試啦>

%f就能顯示出小數點了…

[Alfred]

%3.2d是空格喔~~~~就是你要留多少的距離在印出值

哇~~~ 這裡也有程式討論

我推一下

希望版大乾脆開一個版讓大家可以討論程式好嗎?

謝謝不飛大大

[不知道]

抱歉...
弄錯了...
太久沒寫C了

<Sorry>

><"~~我是改成3.2一樣沒有跑出小數點來><"~~改F滴話會出現Debug error....><???感謝答覆滴各位大大~~有其他大大能幫忙想看看ㄇ><"~~~
我書快翻爛ㄌ><"~~還是找不到原因><"~~~

以下程式碼
sum1 = grade[0][0] + grade[0][1] + grade[0][2];
ave1 = sum1/3;
sum2 = grade[1][0] + grade[1][1] + grade[1][2];
ave2 = sum2/3;
sum3 = grade[2][0] + grade[2][1] + grade[2][2];
ave3 = sum3/3;
sum4 = grade[3][0] + grade[3][1] + grade[3][2];
ave4 = sum4/3;
sum5 = grade[4][0] + grade[4][1] + grade[4][2];
ave5 = sum5/3;

改成

sum1 = grade[0][0] + grade[0][1] + grade[0][2];
ave1 =(float) sum1/3;
sum2 = grade[1][0] + grade[1][1] + grade[1][2];
ave2 = (float)sum2/3;
sum3 = grade[2][0] + grade[2][1] + grade[2][2];
ave3 = (float)sum3/3;
sum4 = grade[3][0] + grade[3][1] + grade[3][2];
ave4 = (float)sum4/3;
sum5 = grade[4][0] + grade[4][1] + grade[4][2];
ave5 = (float)sum5/3;
試試看
記得最後要printf的時候,要把%d改成%f應該就可以了吧

依然失敗QQ"......加入(float)後~~再改%f 出現滴數字是小數點沒錯~"~...
不過出現滴是0.000000<---變這ㄍQQ"~~??

抱歉.....忘了宣告也要改浮點數
float ave1,ave2,ave3,ave4,ave5;
float ave6,ave7,ave8;
這樣就可以了吧......(不行再來問...我已經成功了)

#include <stdio.h>

void main()
{
int num[6][5],po[6];
int sum1,sum2,i,j,temp;

printf("\1: 請輸入成績 \n");
for ( i = 0; i < 5; i++ )
for ( j = 0; j < 3; j++ )
scanf("%d",&num[i][j]);
for ( i = 0; i < 5; i++ )
{
sum1 = 0;
for ( j = 0; j < 3; j++ )
sum1 += num[i][j];
num[i][3] = sum1 / 3;
}
for ( i = 0; i < 5; i++ )
{
po[i] = num[i][3];
}
for ( i = 0; i < 4; i++ )
for ( j = i + 1; j < 5; j++ )
if ( po[i] < po[j] )
{
temp = po[i];
po[i] = po[j];
po[j] = temp;
}
for ( i = 0; i < 5; i++ )
{
if ( num[i][3] == po[0] )
num[i][4] = 1;
else if ( num[i][3] == po[1] )
num[i][4] = 2;
else if ( num[i][3] == po[2] )
num[i][4] = 3;
else if ( num[i][3] == po[3] )
num[i][4] = 4;
else if ( num[i][3] == po[4] )
num[i][4] = 5;
}
for ( j = 0; j < 4; j++ )
{
sum2 = 0;
for ( i = 0; i < 5; i++ )
sum2 += num[i][j];
num[5][j] = sum2 / 5;
}
num[5][4]=0;
for ( i = 0; i < 6; i++ )
printf("\2:%d %d %d %d %d \n",num[i][0],num[i][1],num[i][2],num[i][3],num[i][4]);
}
==============================================
<--這是同學滴答案...可是我不想抄襲~~我滴問題只剩下如何把ave1~5一起丟進陣列裡= =....排名要怎ㄇ讓他排出來(也是丟到陣列裡讓程式自己排名次)

#include<stdio.h>

void main()

{
int grade[5][5] = {
{80,88,93},
{76,74,81},
{58,66,64},
{63,73,71},
{77,92,90}};

int i , j , sum1,sum2,sum3,sum4,sum5;
float ave1,ave2,ave3,ave4,ave5;
for (i=0;i<5;i++)
{
for(j=0;j<3;j++)
{
printf("%-3d",grade[i][j]);
}
printf("\n");
}
sum1 = grade[0][0] + grade[0][1] + grade[0][2];
ave1 = (float)sum1/3;
sum2 = grade[1][0] + grade[1][1] + grade[1][2];
ave2 = (float)sum2/3;
sum3 = grade[2][0] + grade[2][1] + grade[2][2];
ave3 = (float)sum3/3;
sum4 = grade[3][0] + grade[3][1] + grade[3][2];
ave4 = (float)sum4/3;
sum5 = grade[4][0] + grade[4][1] + grade[4][2];
ave5 = (float)sum5/3;
printf("The first student's average is ===>%3.2f \n",ave1);
printf("The second student's average is ===>%3.2f \n",ave2);
printf("The third student's average is ===>%3.2f \n",ave3);
printf("The fourth student's average is ===>%3.2f \n",ave4);
printf("The fifth student's average is ===>%3.2f \n",ave5);
{
int sum6,sum7,sum8;
float ave6,ave7,ave8;
sum6 = grade[0][0] + grade[1][0] + grade[2][0] + grade[3][0] + grade[4][0];
ave6 = (float)sum6/5;
sum7 = grade[0][1] + grade[1][1] + grade[2][1] + grade[3][1] + grade[4][1];
ave7 = (float)sum7/5;
sum8 = grade[0][2] + grade[1][2] + grade[2][2] + grade[3][2] +grade[4] [2] ave8 = (float)sum8/5;
printf("The all class's Math average is ===>%3.2f \n",ave6);
printf("The all class's English average is ===>%3.2f \n",ave7);
printf("The all class's Electronics average is ===>%3.2f\n",ave8);
}

{
int i,j,tmp;
int num[5] = {ave1,ave2,ave3,ave4,ave5};


for(i=0;i<2;i++)
{
for( j=0;j<4;j++)
if (num[j]>num[j+1])
{
tmp = num[j];
num[j]=num[j+1];
num[j+1] = tmp;
}
printf("\2:loop %d ",i);
for(j=0;j<5;j++)
printf("%4d",num[j]);
printf("\n");
}
printf("\2:排名 %d %d %d %d %d \n",5,4,3,2,1);
}

}
==============================================
這ㄍ是小弟滴程式........= =''請幫忙想辦法一下~~~~拜託ㄌ.......我一直丟不進ㄑ~~QQ"~~~

#include<stdio.h>

void main()

{
int grade[5][5] = {
{80,88,93},
{76,74,81},
{58,66,64},
{63,73,71},
{77,92,90}};

int i , j , sum1,sum2,sum3,sum4,sum5;
float ave[8];
for (i=0;i<5;i++)
{
for(j=0;j<3;j++)
{
printf("%-3d",grade[i][j]);
}
printf("\n");
}
sum1 = grade[0][0] + grade[0][1] + grade[0][2];
ave[0] = (float)sum1/3;
sum2 = grade[1][0] + grade[1][1] + grade[1][2];
ave[1] = (float)sum2/3;
sum3 = grade[2][0] + grade[2][1] + grade[2][2];
ave[2] = (float)sum3/3;
sum4 = grade[3][0] + grade[3][1] + grade[3][2];
ave[3] = (float)sum4/3;
sum5 = grade[4][0] + grade[4][1] + grade[4][2];
ave[4] = (float)sum5/3;
printf("The first student's average is ===>%3.2f \n",ave[0]);
printf("The second student's average is ===>%3.2f \n",ave[1]);
printf("The third student's average is ===>%3.2f \n",ave[2]);
printf("The fourth student's average is ===>%3.2f \n",ave[3]);
printf("The fifth student's average is ===>%3.2f \n",ave[4]);
{
int sum6,sum7,sum8;
sum6 = grade[0][0] + grade[1][0] + grade[2][0] + grade[3][0] + grade[4][0];
ave[5] = (float)sum6/5;
sum7 = grade[0][1] + grade[1][1] + grade[2][1] + grade[3][1] + grade[4][1];
ave[6] = (float)sum7/5;
sum8 = grade[0][2] + grade[1][2] + grade[2][2] + grade[3][2] +grade[4][2];
ave[7] = (float)sum8/5;
printf("The all class's Math average is ===>%3.2f \n",ave[5]);
printf("The all class's English average is ===>%3.2f \n",ave[6]);
printf("The all class's Electronics average is ===>%3.2f\n",ave[7]);
}

{
int i,j,tmp;
int num[5];
for(i=0;i<5;i++)
num[i]=ave[i];
for(i=0;i<2;i++)
{
for( j=0;j<4;j++)
if (num[j]>num[j+1])
{
tmp = num[j];
num[j]=num[j+1];
num[j+1] = tmp;
}
printf("\2:loop %d ",i);
for(j=0;j<5;j++)
printf("%4d",num[j]);
printf("\n");
}
printf("\2:排名 %d %d %d %d %d \n",5,4,3,2,1);
}

}

可以了吧.......不懂再來問