M.W.

Lession 1 : The first C programming.

CHUNG CO's photo
CHUNG CO
·

1 min read

#include stdio.h

int main()
{
    printf("Hello World");

    return 0;
}

According to the C90 and C99 standard main should return int.

#include <stdio.h>

stdio.h : "standard library C". This is written by the technical committee

main.c -> main.i (open the standard library)(full code from scratch) -> main.s(assembly) -> main.o (machine code)

int main()
{
    printf("Hello World \n");
    printf("Today is a good day");
}

\ : it's the escape character

n : it's the new line

\n : it's the escape sequence

/r : move the curso back to the beginning of the line

#include <stdio.h>
int main (){
    printf("David says , \" Programming is fun !\"\n");
    printf("**Conditions apply , \"Offers valid until tomorrow\"\n");
    printf("C:\\My computer\\My folder\n");
    printf("D:/My documents/My file\n");
    printf("This is a triple quoted string \"\"\" This month has 30 days \"\"\"");
}