怎么用计算机画ns图 请各位大神帮个忙 画个NS流程图 急！！！

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求平均成绩的！！

#include

#define M 5

#define N 3

void main()

{

void average_score(float score[M][N],float average_s[M],float average_k[N]);

void Max_min(float score[M][N],float Max[N],float Min[N]);

int number[M];

float average_s[M];

float average_k[N];

float Max[N],Min[N];

float score[M][N];

int i,j;

printf("please input \n");

printf("学号 英语 高数 计算机 :\n");

for (i=0;i

{

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

for(j=0;j

scanf("%f",&score[i][j]);

}

for (i=0;i

average_s[i]=0;

for (i=0;i

{

Max[i]=0;

Min[i]=100;

average_k[i]=0;

}

average_score(score,average_s,average_k);

Max_min(score,Max,Min);

printf("学号 英语 高数 计算机 :\n");

for (i=0;i

{

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

for(j=0;j

printf("%8.1f",score[i][j]);

printf("%8.1f",average_s[i]);

printf("\n");

}

printf("平均:\n");

for (i=0;i

printf("%8.1f",average_k[i]);

printf("\n 最大值 最小值:\n");

for (i=0;i

printf("%8.1f %10.1f \n",Max[i],Min[i]);

}

void average_score(float score[M][N],float average_s[M],float average_k[N])

{

int i,j;

for(i=0;i

for(j=0;j

average_s[i]=average_s[i]+score[i][j]/N;

for (i=0;i

for(j=0;j

average_k[j]=average_k[j]+score[i][j]/M;

}

void Max_min(float score[M][N],float Max[N],float Min[N])

{

int i,j;

for (i=0;i

for(j=0;j

if(Max[j]

for(i=0;i

for(j=0;j

if(Min[j]>score[i][j]) Min[j]=score[i][j];

}