lecture 2 introduction to programming ws2013
TRANSCRIPT
8/13/2019 Lecture 2 Introduction to Programming Ws2013
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Introduction to Programming
Lecture 2: Introduction to C
Mahmoud El-Gayyar
8/13/2019 Lecture 2 Introduction to Programming Ws2013
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Mahmoud El-Gayyar / Advanced Programming 2
Introduction to the course
General information
Syllabus
Course organization
General rules
Introduction to Programming
Programming Skills
Programming Model
Elements of a real Programming Languages
History of C
Compiler Terminology
Review Lecture 1
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Mahmoud El-Gayyar / Advanced Programming 3
Introduction to the course
General information
Syllabus
Course organization
General rules
Introduction to Programming
Programming Skills
Programming Model
Elements of a real Programming Languages
History of C
Compiler Terminology
Review Lecture 1
8/13/2019 Lecture 2 Introduction to Programming Ws2013
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Mahmoud El-Gayyar / Advanced Programming 4
Introduction to C Langauge
Your First C Program
Let’s have another example
Program Structure
Outline
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Mahmoud El-Gayyar / Advanced Programming 5
Introduction to C Langauge
Your First C Program
Let’s have another example
Program Structure
Outline
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Mahmoud El-Gayyar / Advanced Programming 6
Programming Language
A programming language is a tool
Can not perform every task unaided
C language has built-in functions
But not for every thing
C is a dangerous language
Provide low level access to memory
You should be careful while dealing with it
8/13/2019 Lecture 2 Introduction to Programming Ws2013
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Introduction to C Langauge
Your First C Program
Let’s have another example
Program Structure
Outline
8/13/2019 Lecture 2 Introduction to Programming Ws2013
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Introduction to C Langauge
Your First C Program
Let’s have another example
Program Structure
Outline
8/13/2019 Lecture 2 Introduction to Programming Ws2013
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Your First C Program
#include <stdio.h> int main() {
printf("Hello, world!\n"); return 0;
}
8/13/2019 Lecture 2 Introduction to Programming Ws2013
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Your First C Program
#include <stdio.h> int main() {
printf("Hello, world!\n"); return 0;
}
8/13/2019 Lecture 2 Introduction to Programming Ws2013
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Your First C Program
#include <stdio.h> int main() {
printf("Hello, world!\n"); return 0;
}
8/13/2019 Lecture 2 Introduction to Programming Ws2013
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Your First C Program
#include <stdio.h> int main() {
printf("Hello, world!\n");
return 0; }
8/13/2019 Lecture 2 Introduction to Programming Ws2013
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Your First C Program
#include <stdio.h> int main() {
printf("Hello, world!\n"); return 0;
}
8/13/2019 Lecture 2 Introduction to Programming Ws2013
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Introduction to C Langauge
Your First C Program
Let’s have another example
Program Structure
Outline
8/13/2019 Lecture 2 Introduction to Programming Ws2013
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Your Second C Program
#include <stdio.h> /* print a few numbers, to illustrate a
simple loop */ int main() {
int i; // single line comment for(i = 0; i < 10; i = i + 1)
printf("i is %d\n", i);return 0;
}
8/13/2019 Lecture 2 Introduction to Programming Ws2013
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Your Second C Program
#include <stdio.h> /* print a few numbers, to illustrate a
simple loop */ int main() {
int i; // single line comment for(i = 0; i < 10; i = i + 1)
printf("i is %d\n", i);return 0;
}
8/13/2019 Lecture 2 Introduction to Programming Ws2013
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Your Second C Program
#include <stdio.h> /* print a few numbers, to illustrate a
simple loop */ int main() {
int i; // single line comment for(i = 0; i < 10; i = i + 1)
printf("i is %d\n", i);return 0;
}
8/13/2019 Lecture 2 Introduction to Programming Ws2013
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Your Second C Program
#include <stdio.h> /* print a few numbers, to illustrate a
simple loop */ int main() {
int i; // single line comment for(i = 0; i < 10; i = i + 1)
printf("i is %d \n", i);return 0;
}
8/13/2019 Lecture 2 Introduction to Programming Ws2013
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Introduction to C Langauge
Your First C Program
Let’s have another example
Program Structure
Outline
8/13/2019 Lecture 2 Introduction to Programming Ws2013
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Program Structure
8/13/2019 Lecture 2 Introduction to Programming Ws2013
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C is Case-Sensitive
So if you write “ Main” instead of “ main” or “ iNt ”
instead of “ int ”, the compiler will give you an error
8/13/2019 Lecture 2 Introduction to Programming Ws2013
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1st Good Programming Style (Indentation)
C don’t care about spaces
for(i = 0; i < 10; i = i + 1) printf("%d\n", i);
for(i = 0; i < 10; i = i + 1) printf("%d\n", i);
for ( i
= 0 ;
i < 10; i =
i + 1
) printf (
"%d\n" , i
) ;
for(i = 0; i < 10; i = i + 1)
printf("%d\n", i);
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C program
May contain several functions
It can also use built-in functions (don’t forget the include)
Must have a main function It may return a value (0, -1)
Comments can be used to enrich your program and make it more
readable
C is case sensitive
Indentations (white spaces) is a good programming style
Summary