1 Structs within structs typedef struct short int
- Slides: 21
1 Structs within structs typedef struct{ short int year; unsigned int month; /* 1. . 12 */ unsigned int day; /* 1. . 31 */ }DATE; DATE birthday = {1963, 1, 4}; 2007 Pearson Education, Inc. All rights reserved.
2 if( birthday. year < 2000 ){ printf(" Born last century!n”); } 2007 Pearson Education, Inc. All rights reserved.
3 typedef struct{ short int year; unsigned char month; /* 1. . 12 */ unsigned char day; /* 1. . 31 */ }DATE; typedef struct{ DATE birthday; char gnd; float weight; }FRIEND; FRIEND esam; FRIEND zayed ={ {1990, 12, 31}, ’M’, 61. 5} /*FRIEND zayed ={ 1990, 12, 31, ’M’, 61. 5}*/ 2007 Pearson Education, Inc. All rights reserved.
4 printf( "Date of birth is %2 u/%4 u n“, zayed. birthday. day, zayed. birthday. month, zayed. birthday. year ); %d decimal (29, -12) %u unsigned value (29, 12) 2007 Pearson Education, Inc. All rights reserved.
5 § Create a struct Appointment – First what is an appointment 2007 Pearson Education, Inc. All rights reserved.
6 § Appointment = Date + Time + description § What is Date and what is Time 2007 Pearson Education, Inc. All rights reserved.
7 § Date = year + month + day § Time = hour + minuets + seconds 2007 Pearson Education, Inc. All rights reserved.
8 typedef struct Date{ int y, m, d; } DATE; typedef struct Time{ int h, m, s; } TIME; typedef struct appointment{ DATE d; TIME t; char description[100]; } APPOINTMENT; create a variable of APPOINTMENT with initial values 2007 Pearson Education, Inc. All rights reserved.
9 APPOINMENT review = { {2010, 11, 28}, {5 , 30, 0}, “to review programming” }; APPOINMENT review = {2010, 11, 28, 5 , 30, 0, “to review programming”}; 2007 Pearson Education, Inc. All rights reserved.
10 § Create a struct name it circle which has a point 2007 Pearson Education, Inc. All rights reserved.
11 § Create a struct name it circle which has a point – First what is a circle 2007 Pearson Education, Inc. All rights reserved.
12 § Create a struct name it circle which has a point – First what is a circle – Circle = ( center ) point + radius – What is a point 2007 Pearson Education, Inc. All rights reserved.
13 § Create a struct name it circle which has a point – First what is a circle – Circle = point + radius – What is a point – Point = x-axis + y-axis 2007 Pearson Education, Inc. All rights reserved.
14 typedef struct { int, x, y; } POINT; typedef struct{ POINT centre; double rds; } CIRCLE; Typedef struct{ int x, y; }POINT; Typedef struct{ POINT centre; double rds; }CIRCLE; /*create a point variable */ 2007 Pearson Education, Inc. All rights reserved.
15 POINT startpoint; POINT startpoint = {10, 10}; create a circle its centre is the original point 2007 Pearson Education, Inc. All rights reserved.
16 CIRCLE crl 1 = {0, 0, 3. 5}; Create a circle and then assign its center startpoint and 2. 4 to the radius 2007 Pearson Education, Inc. All rights reserved.
17 CIRCLE crl 2 ; crl 2. c. x = startpoint. x; crl 2. c. y= startpoint. y; crl 2. rds = 2. 4; crl 2. c = startpoint; crl 2. rds=2. 4; 2007 Pearson Education, Inc. All rights reserved.
18 § Create a struct name it person where each person has a name, address, and birth day 2007 Pearson Education, Inc. All rights reserved.
19 typedef struct { char first[20]; char father[20]; char family[20]; }NAME; typedef struct{ char country[20]; char city[20]; char street[2]; int bulding; int flat; } ADDRESS; typedef struct{ int y, m, d; }DATE; typedef struct { NAME pname; ADDRESS padd; DATE pbd; }PERSON; 2007 Pearson Education, Inc. All rights reserved.
20 ASS § 1 - Create a variable from each with initial values § 2 - Create a variable from PERSON and then show this variable can be assigned values from the variables created at 1 2007 Pearson Education, Inc. All rights reserved.
21 ASS § Recreate the STUDENT struct with a birth day member and then create two variables one initial values and the second allow the user to input the values 2007 Pearson Education, Inc. All rights reserved.
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