week8作业
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第一题:
/* Note:Your choice is C IDE */#include "stdio.h"#include "stdlib.h"#include "time.h"void main(){int a[45],i,j;for (i=0;i<10;i++){a[i]=rand()%45+1;for (j=0;j<i-1;j++){if(a[i]==a[j]){a[i]=rand()%45+1;j=-1;}}printf ("%d\n",a[i]);}}
第二题:
/* Note:Your choice is C IDE */#include "stdio.h"#include "stdlib.h"void main(){ int a[100],i; for (i=0;i<100;i++){ a[i]=rand()%100+1; if(a[i]>50) printf ("a[%d]=%d\n",i,a[i]);}}
第三题:
第一小题(输出对称矩阵):
/* Note:Your choice is C IDE */#include "stdio.h"#include "stdlib.h"#define N 6#define D 9#define M N*(N+1)/2// 需要输出N级矩阵,就将上面的N改为需要输入的数// 若想每次输出的矩阵不相同,则更改D的值void main(){ int a[N][N],b[M],i,c,d,p;printf("your array is :\n"); for (i=0;i<M;i++){ b[i]=rand()%D;} d=0,p=0;do {for (i=d;i<N;i++){a[d][i]=b[p];a[i][d]=b[p];p++;} d++;} while (!(d==N)); for (i=0;i<N;i++){ for (c=0;c<N;c++){ printf ("%d ",a[i][c]);} printf ("\n");}}第二小题(两个矩阵相加):
/* Note:Your choice is C IDE */#include "stdio.h"#include "stdlib.h"#define N 6#define D 9#define M N*(N+1)/2// 需要输出N级矩阵,就将上面的N改为需要输入的数// 若想每次输出的矩阵不相同,则更改D的值void main(){ int a[N][N],b[M],i,c,d,p;printf("your array is :\n"); for (i=0;i<M;i++){ b[i]=rand()%D;} d=0,p=0;do {for (i=d;i<N;i++){a[d][i]=b[p];a[i][d]=b[p];p++;} d++;} while (!(d==N)); for (i=0;i<N;i++){ for (c=0;c<N;c++){ printf ("%d ",a[i][c]);} printf ("\n");}}
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