From: Mart Lubbers <mart@martlubbers.net>
Date: Mon, 9 Feb 2015 08:19:53 +0000 (+0100)
Subject: final ass2
X-Git-Url: https://git.martlubbers.net/?a=commitdiff_plain;h=980352e2c015545276ae44ab4632f42597fb3215;p=sws1-1415.git

final ass2
---

diff --git a/ass2/mart/sws1-s4109503-s4202015/Makefile b/ass2/mart/sws1-s4109503-s4202015/Makefile
index 5802a0e..7b0c0ba 100644
--- a/ass2/mart/sws1-s4109503-s4202015/Makefile
+++ b/ass2/mart/sws1-s4109503-s4202015/Makefile
@@ -1,7 +1,10 @@
 CC=gcc
 CFLAGS=-std=c99 -Wall -Wextra
 
-all: exercise1 exercise2
+all: exercise1 exercise2 exercise3
+
+exercise3: exercise3.c
+	$(CC) $(CFLAGS) -O3 exercise3.c -o exercise3
 
 exercise2: exercise2.c
 	$(CC) $(CFLAGS) -O3 exercise2.c -o exercise2
@@ -11,4 +14,4 @@ exercise1: exercise1b.c exercise1d.c
 	$(CC) $(CFLAGS) exercise1d.c -o exercise1d
 
 clean:
-	$(RM) exercise1b exercise1d exercise2
+	$(RM) exercise1b exercise1d exercise2 exercise3
diff --git a/ass2/mart/sws1-s4109503-s4202015/exercise1b b/ass2/mart/sws1-s4109503-s4202015/exercise1b
deleted file mode 100755
index 663e25a..0000000
Binary files a/ass2/mart/sws1-s4109503-s4202015/exercise1b and /dev/null differ
diff --git a/ass2/mart/sws1-s4109503-s4202015/exercise1b.c b/ass2/mart/sws1-s4109503-s4202015/exercise1b.c
index 1f8a43e..c9c0f52 100644
--- a/ass2/mart/sws1-s4109503-s4202015/exercise1b.c
+++ b/ass2/mart/sws1-s4109503-s4202015/exercise1b.c
@@ -4,7 +4,7 @@
 int main(void)
 {
 	FILE *f = fopen("/dev/urandom", "r");
-	char c;
+	unsigned char c;
 	do {
 		c = fgetc(f);
 		printf("%i %u %x\n", c, c, c);
diff --git a/ass2/mart/sws1-s4109503-s4202015/exercise1c b/ass2/mart/sws1-s4109503-s4202015/exercise1c
index 5dc9dbd..dd66f6c 100644
--- a/ass2/mart/sws1-s4109503-s4202015/exercise1c
+++ b/ass2/mart/sws1-s4109503-s4202015/exercise1c
@@ -1,16 +1,302 @@
--82 4294967214 ffffffae
-91 91 5b
--63 4294967233 ffffffc1
--41 4294967255 ffffffd7
--22 4294967274 ffffffea
-103 103 67
--33 4294967263 ffffffdf
--115 4294967181 ffffff8d
--90 4294967206 ffffffa6
+150 150 96
+127 127 7f
+119 119 77
+46 46 2e
+190 190 be
+59 59 3b
+65 65 41
+27 27 1b
+125 125 7d
+26 26 1a
+171 171 ab
+8 8 8
+29 29 1d
+178 178 b2
+226 226 e2
+21 21 15
+229 229 e5
+31 31 1f
+106 106 6a
+100 100 64
+201 201 c9
+24 24 18
+225 225 e1
+82 82 52
+4 4 4
+9 9 9
+12 12 c
+44 44 2c
+167 167 a7
+178 178 b2
+31 31 1f
+202 202 ca
+211 211 d3
+113 113 71
+86 86 56
+65 65 41
+79 79 4f
+191 191 bf
+188 188 bc
+45 45 2d
+199 199 c7
+122 122 7a
+203 203 cb
+217 217 d9
+6 6 6
+66 66 42
+72 72 48
+167 167 a7
+116 116 74
+107 107 6b
+88 88 58
+22 22 16
+3 3 3
+65 65 41
+17 17 11
+155 155 9b
+178 178 b2
+144 144 90
+193 193 c1
+196 196 c4
+44 44 2c
+124 124 7c
+102 102 66
+18 18 12
+132 132 84
+86 86 56
+199 199 c7
+35 35 23
+175 175 af
+218 218 da
+125 125 7d
+181 181 b5
+201 201 c9
+123 123 7b
+240 240 f0
+224 224 e0
+96 96 60
+87 87 57
+17 17 11
+160 160 a0
+101 101 65
+57 57 39
+59 59 3b
+201 201 c9
+138 138 8a
+82 82 52
+26 26 1a
+5 5 5
+108 108 6c
+62 62 3e
+175 175 af
+236 236 ec
+252 252 fc
+6 6 6
+226 226 e2
+40 40 28
+125 125 7d
+138 138 8a
+242 242 f2
+149 149 95
+162 162 a2
+57 57 39
+228 228 e4
 108 108 6c
 60 60 3c
--42 4294967254 ffffffd6
--55 4294967241 ffffffc9
--26 4294967270 ffffffe6
-25 25 19
+254 254 fe
+57 57 39
+174 174 ae
+228 228 e4
+125 125 7d
+52 52 34
+200 200 c8
+183 183 b7
+255 255 ff
+170 170 aa
+76 76 4c
+63 63 3f
+242 242 f2
+158 158 9e
+57 57 39
+235 235 eb
+221 221 dd
+90 90 5a
+233 233 e9
+235 235 eb
+170 170 aa
+34 34 22
+52 52 34
+98 98 62
+21 21 15
+145 145 91
+222 222 de
+9 9 9
+61 61 3d
+52 52 34
+222 222 de
+240 240 f0
+87 87 57
+218 218 da
+187 187 bb
+10 10 a
+150 150 96
+3 3 3
+143 143 8f
+9 9 9
+241 241 f1
+154 154 9a
+190 190 be
+140 140 8c
+86 86 56
+163 163 a3
+151 151 97
+214 214 d6
+26 26 1a
+207 207 cf
+19 19 13
+10 10 a
+92 92 5c
+26 26 1a
+194 194 c2
+23 23 17
+99 99 63
+185 185 b9
+221 221 dd
+126 126 7e
+133 133 85
+236 236 ec
+152 152 98
+154 154 9a
+30 30 1e
+250 250 fa
+119 119 77
+215 215 d7
+201 201 c9
+134 134 86
+119 119 77
+119 119 77
+117 117 75
+104 104 68
+142 142 8e
+206 206 ce
+138 138 8a
+24 24 18
+65 65 41
+116 116 74
+219 219 db
+184 184 b8
+111 111 6f
+239 239 ef
+232 232 e8
+151 151 97
+143 143 8f
+252 252 fc
+187 187 bb
+253 253 fd
+154 154 9a
+90 90 5a
+216 216 d8
+224 224 e0
+182 182 b6
+3 3 3
+190 190 be
+140 140 8c
+181 181 b5
+126 126 7e
+40 40 28
+127 127 7f
+74 74 4a
+134 134 86
+91 91 5b
+163 163 a3
+69 69 45
+34 34 22
+35 35 23
+140 140 8c
+165 165 a5
+135 135 87
+69 69 45
+135 135 87
+29 29 1d
+112 112 70
+53 53 35
+160 160 a0
+160 160 a0
+187 187 bb
+13 13 d
+195 195 c3
+225 225 e1
+31 31 1f
+202 202 ca
+88 88 58
+196 196 c4
+8 8 8
+241 241 f1
+222 222 de
+223 223 df
+238 238 ee
+49 49 31
+34 34 22
+209 209 d1
+76 76 4c
+93 93 5d
+128 128 80
+186 186 ba
+96 96 60
+254 254 fe
+179 179 b3
+3 3 3
+101 101 65
+87 87 57
+129 129 81
+114 114 72
+61 61 3d
+113 113 71
+138 138 8a
+223 223 df
+140 140 8c
+142 142 8e
+1 1 1
+131 131 83
+124 124 7c
+6 6 6
+82 82 52
+167 167 a7
+19 19 13
+155 155 9b
+145 145 91
+182 182 b6
+205 205 cd
+221 221 dd
+41 41 29
+80 80 50
+52 52 34
+214 214 d6
+73 73 49
+69 69 45
+1 1 1
+55 55 37
+144 144 90
+144 144 90
+186 186 ba
+211 211 d3
+39 39 27
+172 172 ac
+130 130 82
+56 56 38
+134 134 86
+213 213 d5
+21 21 15
+73 73 49
+101 101 65
+43 43 2b
+225 225 e1
+210 210 d2
+231 231 e7
+125 125 7d
+11 11 b
+116 116 74
+192 192 c0
+33 33 21
+234 234 ea
 42 42 2a
diff --git a/ass2/mart/sws1-s4109503-s4202015/exercise1d b/ass2/mart/sws1-s4109503-s4202015/exercise1d
deleted file mode 100755
index 89a79b9..0000000
Binary files a/ass2/mart/sws1-s4109503-s4202015/exercise1d and /dev/null differ
diff --git a/ass2/mart/sws1-s4109503-s4202015/exercise1d.c b/ass2/mart/sws1-s4109503-s4202015/exercise1d.c
index 07dfa41..9e629ee 100644
--- a/ass2/mart/sws1-s4109503-s4202015/exercise1d.c
+++ b/ass2/mart/sws1-s4109503-s4202015/exercise1d.c
@@ -7,7 +7,7 @@ int main(void)
 	FILE *f = fopen("/dev/urandom", "r");
 	uint16_t c;
 	do {
-		c = fgetc(f)+fgetc(f)*256;
+		c = fgetc(f) + fgetc(f) * 256;
 		printf("%04x\n", c);
 	} while(c != 42);
 	fclose(f);
diff --git a/ass2/mart/sws1-s4109503-s4202015/exercise2 b/ass2/mart/sws1-s4109503-s4202015/exercise2
deleted file mode 100755
index fda7b35..0000000
Binary files a/ass2/mart/sws1-s4109503-s4202015/exercise2 and /dev/null differ
diff --git a/ass2/mart/sws1-s4109503-s4202015/exercise2.c b/ass2/mart/sws1-s4109503-s4202015/exercise2.c
index c05c0ed..45a50d6 100644
--- a/ass2/mart/sws1-s4109503-s4202015/exercise2.c
+++ b/ass2/mart/sws1-s4109503-s4202015/exercise2.c
@@ -3,11 +3,9 @@
 
 void print(char *address, unsigned int size)
 {
-	printf("address: %p, size: %u, psize: %u\n", address, size, sizeof(address));
-	for(unsigned char i=0; i<size; i++)
-	{
-		int value = *((char*)(address+i));
-		printf("%p %x %u\n", address+i, value, value);
+	for(unsigned char i = 0; i < size; i++) {
+		unsigned char value = (unsigned char)*(address + i);
+		printf("%p  0x%02X           %3u\n", address + i, value, value);
 	}
 }
 
@@ -15,13 +13,15 @@ int main(void)
 {
 	short i = 0x1234;
 	char x = -127;
-	long sn1 = 4109503;/*
+	long sn1 = 4109503;
 	long sn2 = 4202015;
-	int y[2] = {0x11223344, 0x443332211};*/
-	printf("address   content (hex)  content(dec)\n");
-
+	int y[2] = {0x11223344, 0x44332211};
+	printf("address         content (hex)  content(dec)\n");
+	printf("------------------------------------------\n");
 	print((char *)&i, sizeof(i));
 	print((char *)&x, sizeof(x));
 	print((char *)&sn1, sizeof(sn1));
+	print((char *)&sn2, sizeof(sn2));
+	print((char *)&y, sizeof(y));
 	return 0;
 }
diff --git a/ass2/mart/sws1-s4109503-s4202015/exercise2.exp b/ass2/mart/sws1-s4109503-s4202015/exercise2.exp
new file mode 100644
index 0000000..e46ec76
--- /dev/null
+++ b/ass2/mart/sws1-s4109503-s4202015/exercise2.exp
@@ -0,0 +1,33 @@
+Markings in the last column denote the bytes representing the marking from the
+first byte after the previous marking up to and including the byte in the
+column of the marking. On this configuration supposedly stores the values in a
+little endian byte order, this is clearly visible in the values of the longs.
+
+Address         Hex value      Decimal value  Explanation
+0x7fffbe1976be  0x34            52
+0x7fffbe1976bf  0x12            18            short i = 0x1234
+0x7fffbe1976bd  0x81           129            char x = -127
+0x7fffbe1976d0  0xBF           191
+0x7fffbe1976d1  0xB4           180
+0x7fffbe1976d2  0x3E            62
+0x7fffbe1976d3  0x00             0
+0x7fffbe1976d4  0x00             0
+0x7fffbe1976d5  0x00             0
+0x7fffbe1976d6  0x00             0
+0x7fffbe1976d7  0x00             0            long sn1 = 4109503
+0x7fffbe1976d8  0x1F            31
+0x7fffbe1976d9  0x1E            30
+0x7fffbe1976da  0x40            64
+0x7fffbe1976db  0x00             0
+0x7fffbe1976dc  0x00             0
+0x7fffbe1976dd  0x00             0
+0x7fffbe1976de  0x00             0
+0x7fffbe1976df  0x00             0            long sn1 = 4109503
+0x7fffbe1976c0  0x44            68
+0x7fffbe1976c1  0x33            51
+0x7fffbe1976c2  0x22            34
+0x7fffbe1976c3  0x11            17            int y[0] = 0x11223344
+0x7fffbe1976c4  0x11            17
+0x7fffbe1976c5  0x22            34
+0x7fffbe1976c6  0x33            51
+0x7fffbe1976c7  0x44            68            int y[0] = 0x44332211
diff --git a/ass2/mart/sws1-s4109503-s4202015/exercise2.out b/ass2/mart/sws1-s4109503-s4202015/exercise2.out
new file mode 100644
index 0000000..a800389
--- /dev/null
+++ b/ass2/mart/sws1-s4109503-s4202015/exercise2.out
@@ -0,0 +1,29 @@
+address         content (hex)  content(dec)
+------------------------------------------
+0x7fffbe1976be  0x34            52
+0x7fffbe1976bf  0x12            18
+0x7fffbe1976bd  0x81           129
+0x7fffbe1976d0  0xBF           191
+0x7fffbe1976d1  0xB4           180
+0x7fffbe1976d2  0x3E            62
+0x7fffbe1976d3  0x00             0
+0x7fffbe1976d4  0x00             0
+0x7fffbe1976d5  0x00             0
+0x7fffbe1976d6  0x00             0
+0x7fffbe1976d7  0x00             0
+0x7fffbe1976d8  0x1F            31
+0x7fffbe1976d9  0x1E            30
+0x7fffbe1976da  0x40            64
+0x7fffbe1976db  0x00             0
+0x7fffbe1976dc  0x00             0
+0x7fffbe1976dd  0x00             0
+0x7fffbe1976de  0x00             0
+0x7fffbe1976df  0x00             0
+0x7fffbe1976c0  0x44            68
+0x7fffbe1976c1  0x33            51
+0x7fffbe1976c2  0x22            34
+0x7fffbe1976c3  0x11            17
+0x7fffbe1976c4  0x11            17
+0x7fffbe1976c5  0x22            34
+0x7fffbe1976c6  0x33            51
+0x7fffbe1976c7  0x44            68
diff --git a/ass2/mart/sws1-s4109503-s4202015/exercise3.c b/ass2/mart/sws1-s4109503-s4202015/exercise3.c
new file mode 100644
index 0000000..f740e04
--- /dev/null
+++ b/ass2/mart/sws1-s4109503-s4202015/exercise3.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+
+int main(void){
+	printf("A bool uses %lu bytes\n", sizeof(bool));
+	printf("Hex representation of true: %X\n", true);
+	printf("Hex representation of false: %X\n", false);
+/* Running the following code shows that all but the 0x00 byte evaluate true */
+/*	for(unsigned char i = 0; i<255; i++)
+		printf("Hex %x evaluates to %s\n", i, i ? "true" : "false");*/
+	return 0;
+}