22920142203792 - 陈贤鹏

assignments/shell/AddUsers/addUsers.sh

@@ -1,9 +1,9 @@
-#
+#!/bin/bash
 #
 # useradd
 # chpasswd
 # chown
 # chmod
 # edquota
 #
-
+#echo

assignments/shell/AddUsers/addUsers.sh~

@@ -0,0 +1,9 @@
+#!/bin/bash
+#
+# useradd
+# chpasswd
+# chown
+# chmod
+# edquota
+#
+

experiments/gcc-1-hello-world/main.c

@@ -2,5 +2,6 @@
 
 int main(void) {
 	printf("Hello world!\n");
+	printf("another Hello world!\n");
 	return 0;
 }

experiments/gcc-1-hello-world/main.c~

@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+int main(void) {
+	printf("Hello world!\n");
+	return 0;
+}

experiments/gcc-2-multi-source/calculator.c

@@ -1,5 +1,5 @@
 #include "include/calculator.h"
-
+#include <stdio.h>
 int sum(int x, int y) {
 	return x + y;
 }
@@ -13,5 +13,10 @@ int multiply(int x, int y) {
 }
 
 int divide(int x, int divisor) {
+     if(divisor != 0)
 	return x / divisor;
+     else{
+	printf("error:divisor can not be 0\n");
+	return -1;
+     }
 }

experiments/gcc-2-multi-source/calculator.c~

@@ -0,0 +1,22 @@
+#include "include/calculator.h"
+
+int sum(int x, int y) {
+	return x + y;
+}
+
+int subtract(int x, int y) {
+	return x - y;
+}
+
+int multiply(int x, int y) {
+	return x * y;
+}
+
+int divide(int x, int divisor) {
+     if(divisor != 0)
+	return x / divisor;
+     else{
+	echo("error:divisor can not be 0\n");
+	return -1;
+     }
+}

experiments/gcc-2-multi-source/main.c

@@ -1,5 +1,5 @@
 #include <stdio.h>
-
+#include "include/calculator.h"
 int main(void) {
 	int x, y;
 

experiments/gcc-2-multi-source/main.c~

@@ -0,0 +1,12 @@
+#include <stdio.h>
+
+int main(void) {
+	int x, y;
+
+	x = 2;
+	y = 3;
+
+	printf("%d + %d = %d\n", x, y, sum(2, 3));
+
+	return 0;
+}

experiments/gcc-3-real-project/calculator.c

@@ -1,4 +1,5 @@
 #include "include/calculator.h"
+#include <stdio.h>
 
 int sum(int x, int y) {
 	return x + y;
@@ -13,5 +14,10 @@ int multiply(int x, int y) {
 }
 
 int divide(int x, int divisor) {
+     if(divisor != 0)
 	return x / divisor;
+     else{
+	printf("error:divisor can not be 0\n");
+	return -1;
+     }
 }

experiments/gcc-3-real-project/calculator.c~

@@ -0,0 +1,22 @@
+#include "include/calculator.h"
+#include"include.h"
+int sum(int x, int y) {
+	return x + y;
+}
+
+int subtract(int x, int y) {
+	return x - y;
+}
+
+int multiply(int x, int y) {
+	return x * y;
+}
+
+int divide(int x, int divisor) {
+     if(divisor != 0)
+	return x / divisor;
+     else{
+	printf("error:divisor can not be 0\n");
+	return -1;
+     }
+}

experiments/gcc-3-real-project/main.c~

@@ -0,0 +1,14 @@
+#include <stdio.h>
+
+#include "include/calculator.h"
+
+int main(void) {
+	int x, y;
+
+	x = 2;
+	y = 3;
+
+	printf("%d - %d = %d\n", x, y, subtract(2, 3));
+
+	return 0;
+}

experiments/真实的C项目/Makefile

@@ -0,0 +1,9 @@
+main:main.o calculator.o
+	gcc main.o calculator.o -o main
+main.o:main.c
+	gcc -c main.c
+calculator.o:calculator.c
+	gcc -c calculator.c
+
+clean:
+	rm main *.o

experiments/真实的C项目/calculator.c

@@ -0,0 +1,9 @@
+#include "include/calculator.h"
+
+
+int compare(int a,int b){
+	if(a>b)
+	  return 1;
+	else
+	  return 0;
+}

experiments/真实的C项目/calculator.c~

@@ -0,0 +1,9 @@
+#include "include/calculator.h"
+
+
+bool compare(int a,int b){
+	if(a>b)
+	  return true;
+	else
+	  return false;
+}

experiments/真实的C项目/include/calculator.h

@@ -0,0 +1,6 @@
+#ifndef _CALC_H
+#define _CALC_H
+
+int compare(int a,int b);
+
+#endif //_CALC_H

experiments/真实的C项目/include/calculator.h~

@@ -0,0 +1,6 @@
+#ifndef _CALC_H
+#define _CALC_H
+
+bool compare(int a,int b);
+
+#endif //_CALC_H

experiments/真实的C项目/main.c

@@ -0,0 +1,14 @@
+#include <stdio.h>
+
+#include "include/calculator.h"
+
+int main(void) {
+	int x,y;
+	x=3,y=2;
+	printf("x>2:");
+	if(compare(x,y)>0)
+	 printf("true\n");
+	else
+	 printf("false\n");
+	return 0;
+}

experiments/真实的C项目/main.c~

@@ -0,0 +1,10 @@
+#include <stdio.h>
+
+#include "include/calculator.h"
+
+int main(void) {
+	int x,y;
+	x=3,y=2;
+	printf("x>2:",compare(x,y)>0?printf("true\n"):printf("false\n"));
+	return 0;
+}

experiments/编译器优化作业/Makefile

@@ -0,0 +1,36 @@
+result:main array calculator
+	gcc main.o array.o calculator.o -o result
+
+main: main_clean main.c
+	gcc -c -O0 main.c
+main_optimize: main_clean main.c
+	gcc -c -O2 main.c
+main_clean:
+	if [ -e main.o ] ; then rm main.o ; fi
+
+
+calculator:calculator.c
+	gcc -c calculator.c
+
+array: array_clean array.c
+	gcc -c -O0 array.c
+array_optimize: array_clean array.c
+	gcc -c -O2 array.c
+array_clean:
+	if [ -e array.o ] ; then rm array.o ; fi
+
+
+release: main_optimize array_optimize calculator
+	gcc main.o array.o -o release
+
+diff: result release
+	./result
+	./release
+
+clean:
+	if [ -e result ] ; then rm result ; fi
+
+	if [ -e release ] ; then rm release ; fi
+
+	rm *.o
+

experiments/编译器优化作业/array.c

@@ -0,0 +1,35 @@
+#include <stdio.h>
+
+#include "include/array.h"
+
+#define VECTOR_LENGTH 2048
+
+void array_get(int arrayX[VECTOR_LENGTH][VECTOR_LENGTH],int arrayY[VECTOR_LENGTH][VECTOR_LENGTH],int n1,int m1,int n2,int m2){
+	int i,j;
+	for(i = 0 ; i < n1 ; i ++ )
+	  for(j = 0 ; j < m1; j++ )
+	     	scanf("%d",&arrayX[i][j]);
+	for(i = 0 ; i < n2 ; i ++ )
+	  for(j = 0 ; j < m2; j++ )
+	     	scanf("%d",&arrayY[i][j]);
+}
+
+void array_multiply(int vector_a[VECTOR_LENGTH][VECTOR_LENGTH], int vector_b[VECTOR_LENGTH][VECTOR_LENGTH], int vector_c[VECTOR_LENGTH][VECTOR_LENGTH],int n1,int m1,int n2,int m2){
+	if(m1!=n2){
+	  printf("Error!\n");
+	  return ;
+	}
+	int i,j,k;
+	for(i = 0 ;i < n1; i ++)
+	  for(k = 0 ;k < m2 ; k++)
+	    vector_c[i][k] = 0;
+	for(i = 0 ; i < n1; i++)
+	  for(j = 0 ; j < m1 ;j++)
+	     for(k = 0;k < m2 ; k++)
+		vector_c[i][k] += vector_a[i][j]*vector_b[j][k];
+}
+
+
+
+
+

experiments/编译器优化作业/array.c~

@@ -0,0 +1,35 @@
+#include <stdio.h>
+
+#include "include/array.h"
+
+#define VECTOR_LENGTH 2048
+
+void array_get(int arrayX[VECTOR_LENGTH][VECTOR_LENGTH],int arrayY[VECTOR_LENGTH][VECTOR_LENGTH],int n1,int m1,int n2,int m2){
+	int i,j;
+	for(i = 0 ; i < n1 ; i ++ )
+	  for(j = 0 ; j < m1; j++ )
+	     	scanf("%d",&arrayX[i][j]);
+	for(i = 0 ; i < n2 ; i ++ )
+	  for(j = 0 ; j < m2; j++ )
+	     	scanf("%d",&arrayY[i][j]);
+}
+
+void array_multiply(int vector_a[VECTOR_LENGTH][VECTOR_LENGTH], int vector_b[VECTOR_LENGTH][VECTOR_LENGTH], int vector_c[VECTOR_LENGTH][VECTOR_LENGTH],int n1,int m1,int n2,int m2){
+	if(m1!=n2){
+	  printf("Error!\n");
+	  return ;
+	}
+	int i,j,k;
+	for(i = 0 ;i < n1; i ++)
+	  for(k = 0 ;k < m2 ; k++)
+	    vector_c[[i][k] = 0;
+	for(i = 0 ; i < n1; i++)
+	  for(j = 0 ; j < m1 ;j++)
+	     for(k = 0;k < m2 ; k++)
+		vector_c[i][k] += vector_a[i][j]*vector_b[j][k];
+}
+
+
+
+
+

experiments/编译器优化作业/calculator.c

@@ -0,0 +1,17 @@
+#include "include/calculator.h"
+
+int sum(int x, int y) {
+	return x + y;
+}
+
+int subtract(int x, int y) {
+	return x - y;
+}
+
+int multiply(int x, int y) {
+	return x * y;
+}
+
+int divide(int x, int divisor) {
+	return x / divisor;
+}

experiments/编译器优化作业/include/array.h

@@ -0,0 +1,8 @@
+#ifndef _ARRAY_H
+#define _ARRAY_H
+#define VECTOR_LENGTH 2048
+void array_get(int arrayX[VECTOR_LENGTH][VECTOR_LENGTH],int arrayY[VECTOR_LENGTH][VECTOR_LENGTH],int n1,int m1,int n2,int m2);
+
+void array_multiply(int vector_a[VECTOR_LENGTH][VECTOR_LENGTH], int vector_b[VECTOR_LENGTH][VECTOR_LENGTH], int vector_c[VECTOR_LENGTH][VECTOR_LENGTH],int n1,int m1,int n2,int m2);
+
+#endif

experiments/编译器优化作业/include/array.h~

@@ -0,0 +1,8 @@
+#ifndef _ARRAY_H
+#define _ARRAY_H
+#define VECTOR_LENGTH 2048
+void array_get(int arrayX[VECTOR_LENGTH][VECTOR_LENGTH],int arrayY[VECTOR_LENGTH][VECTOR_LENGTH]);
+
+void array_multiply(int vector_a[VECTOR_LENGTH][VECTOR_LENGTH], int vector_b[VECTOR_LENGTH][VECTOR_LENGTH], int vector_c[VECTOR_LENGTH][VECTOR_LENGTH]);
+
+#endif

experiments/编译器优化作业/include/calculator.h

@@ -0,0 +1,9 @@
+#ifndef _CALC_H
+#define _CALC_H
+
+int sum(int x, int y);
+int subtract(int x, int y);
+int multiply(int x, int y);
+int divide(int x, int divisor);
+
+#endif //_CALC_H