diff --git a/2随机矩阵.c b/2随机矩阵.c
new file mode 100644
index 0000000..eedc8d7
--- /dev/null
+++ b/2随机矩阵.c
@@ -0,0 +1,68 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<string.h>
+int main(){
+	srand(time(NULL));
+	int i,j,numa,numb,numc;
+	char board[9][9],num[9];
+	memset(board,0,sizeof(board));
+	memset(num,0,sizeof(num));
+	int randchar(char* c){
+		int i,j,temp,numa,numb;
+		for(j=0;j<9;j++){
+			c[j]=j+1;
+		}
+		for(i=0;i<50;i++){
+			numa=rand()%9;
+			do{
+				numb=rand()%9;
+			}while(numb==numa);
+			temp=c[numa];
+			c[numa]=c[numb];
+			c[numb]=temp;
+		}
+		//return c;
+		
+	}
+
+	for(i=0;i<3;i++){
+		randchar(num);
+		for(j=0;j<3;j++){
+			numa=rand()%9;
+			do{
+				numb=rand()%9;
+			}while(numb==numa);
+			do{
+				numc=rand()%9;
+			}while(numc==numa&&numc==numb);
+			board[j+3*i][numa]=num[0+3*j];
+			board[j+3*i][numb]=num[1+3*j];
+			board[j+3*i][numc]=num[2+3*j];
+		}
+		
+	}
+	for(i=0;i<9;i++){
+		if(i==0||i==3||i==6){
+			printf("|-----------------------|\n");
+		}
+		printf("| ");
+			for(j=0;j<9;j++){
+				if(board[i][j]!=0){
+					printf("%d ",board[i][j]);
+				}
+				else{
+					printf(". ");
+				}
+				if(j==2||j==5||j==8){
+					printf("| ");
+				}
+				if(j==8){
+					printf("\n");
+				}
+			}
+		
+	}
+	printf("|-----------------------|\n");
+	
+	
+}