Mini header files in c and how to work with a macro in c

Mini Header Files in C And How To Work With A Macro In c

ERROR COPY:-

 #include <stdio.h>  

 #include<conio.h>

  

 #define    CCPLUSPLUS  "ccplusplus"  

   

 int main () {  

    #ifndef CCPLUSPLUS 

    printf("N is not defined"); 

   

        #error c is required, so what can i do???  

    #endif  

      getch();

   // return 0;  

 }  

HEADER 1 COPY:-

#include<stdio.h>

#include<conio.h>

//#include"head1.h"

int main()

{

    int a=10,b=20;

    sum(a,b);

    diff(a,b);

    getch();

}

IFDEF.C:-

#include<stdio.h>

#include<conio.h>

#define N 10

 

 int main()

 {

     #ifndef N

     

     printf("N is not defined");

     

     #else

     

     printf("N defined");

     

     #endif

     

     getch();

     }

MAC PROGRAME:-

#include<stdio.h>

#include<conio.h>

#define MAX(x, y) ((x)>(y)) ? (x):(y)

int main()

{

int i=10, j=5, k=0;

    k = MAX(i, j++);

printf("%d, %d, %d\n", i, j, k);

getch();

}

MACRO PROGRAME:-

#include<stdio.h>

#include<conio.h>

#define area(r) r*3.14

int main()

{

        float a;

        a=area(6);

        printf("Area circle=%f",a);

        getch();

}

MAIN PROGRAMME:-

#include <stdio.h>

#include "util.h"

#define MAX 10

int a[MAX];

int main()

{

    int i,t,x,y;

    /* fill array */

    for (i=0; i < MAX; i++)

    {

        a[i]=rand();

        printf("%d\n",a[i]);

    }

    bubble_sort(MAX,a);

    /* print sorted array */

    printf("--------------------\n");

    for (i=0; i < MAX; i++)

        printf("%d\n",a[i]);

}

SQUARE.C:-

#include"C:\Users\Gurman\Desktop\sq.h"

double square(double x)

{

   return x * x;

}

TEST.C:-

#include <stdio.h>

#include "C:\Users\Gurman\Desktop\sq.h"

int main()

{

int i;

scanf("%d", &i);

printf("%g\n", square(i));

}

UTIL.C:-

/* util.c */

#include "util.h"

int rand_seed=10;

/* from K&R

 - produces a random number between 0 and 32767.*/

int rand()

{

    rand_seed = rand_seed * 1103515245 +12345;

    return (unsigned int)(rand_seed / 65536) % 32768;

}

void bubble_sort(int m,int a[])

{

    int x,y,t;

     for (x=0; x < m-1; x++)

        for (y=0; y < m-x-1; y++)

            if (a[y] > a[y+1])

            {

                t=a[y];

                a[y]=a[y+1];

                a[y+1]=t;

            }

}

AREA MACRO:-

#include<stdio.h>

#include<conio.h>

#define Pi 3.14

int main()

{

    float area,r;

    printf("enter the value of r");

    scanf("%f",&r);

    area=Pi*r*r;

    printf("area=%f",area);

    getch();

}