Create a 3 program 1 is for consumer process and 2 for producer process

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C

Write 3 programs. Two of the programs would be producer process which write
the value of temperature (at every 3 second) and pressure( every 3 second)
respectively into a shared memory segment with 2 locations ( One for temperature of float data type and one for pressure of double data type). The third process would be a consumer process which would consume and display the current pressure and temperature at every 3 seconds.

What I have tried:

#include <stdio.h>
void main()
{
     int tmp;

	printf("Input days temperature : ");
	scanf("%d",&tmp);
	if(tmp<0)
		printf("Freezing weather.\n");
   else if(tmp<10)
		printf("Very cold weather.\n");
	else if(tmp<20)
		printf("Cold weather.\n");
	else if(tmp<30)
		printf("Normal in temp.\n");
	else if(tmp<40)
		printf("Its Hot.\n");
	else
		printf("Its very hot.\n");
}