完成习题12

ex12/Makefile

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+CFLAGS=-Wall -g

ex12/ex12.c

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+#include <stdio.h>
+
+int main(int argc, char *argv[])
+{
+    char full_name[] = {
+        'Z', 'e', 'd',
+        ' ', 'A', '.', ' ',
+        'S', 'h', 'a', 'w'// , '\0'
+    };
+
+
+    int areas[] = {95, 12, 13, 14, 20};
+    char name[] = "Zed";
+
+    areas[1] = 100;
+    name[3] = 'Z';
+    full_name[11] = 'Z';
+    name[0] = areas[0]; 
+
+    // WARNING: On some systems you may have to change     // the %ld in this code to a %u since it will use 
+    // unsigned ints
+    printf("The size of an int: %ld\n", sizeof(int));
+    printf("The size of areas (int[]): %ld\n", sizeof(areas));
+    printf("The number of ints in areas: %ld\n", sizeof(areas) / sizeof(int));
+    printf("The first area is %d, the 2nd %d.\n", areas[10], areas[1]);
+
+    printf("The size of a char: %ld\n", sizeof(char));
+    printf("The size of name (char[]): %ld\n", sizeof(name));
+    printf("The number of chars: %ld\n", sizeof(name) / sizeof(char));
+
+    printf("The size of full_name (char[]): %ld\n", sizeof(full_name));
+    printf("The number of chars: %ld\n", sizeof(full_name) / sizeof(char));
+
+    printf("name=\"%s\" and full_name=\"%s\"\n", name, full_name);
+
+    return 0;
+}

ex12/ex12_copy.c

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+#include <stdio.h>
+
+int main(int argc, char *argv[])
+{
+    int areas[] = {10, 12, 13, 14, 20};
+    char name[] = "Zed";
+    char full_name[] = {
+        'Z', 'e', 'd',
+        ' ', 'A', '.', ' ',
+        'S', 'h', 'a', 'w', '\0'
+    };
+
+    // WARNING: On some systems you may have to change     // the %ld in this code to a %u since it will use 
+    // unsigned ints
+    printf("The size of an int: %ld\n", sizeof(int));
+    printf("The size of areas (int[]): %ld\n", sizeof(areas));
+    printf("The number of ints in areas: %ld\n", sizeof(areas) / sizeof(int));
+    printf("The first area is %d, the 2nd %d.\n", areas[0], areas[1]);
+
+    printf("The size of a char: %ld\n", sizeof(char));
+    printf("The size of name (char[]): %ld\n", sizeof(name));
+    printf("The number of chars: %ld\n", sizeof(name) / sizeof(char));
+
+    printf("The size of full_name (char[]): %ld\n", sizeof(full_name));
+    printf("The number of chars: %ld\n", sizeof(full_name) / sizeof(char));
+
+    printf("name=\"%s\" and full_name=\"%s\"\n", name, full_name);
+
+    return 0;
+}

ex12/vedio

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+http://ewm.ptpress.com.cn:8085/preview?qrCode=qr2018001489&verified=true