text: #include<stdio.h>
  addition();//function prototype
  main()
  {
  	//core functionalitty
  	//function call
  	addition();
  }
  //function declaration
  addition()
  {
  	int a=0,b=0,c=0,d=0;
  	printf("Enter 4 number:");
  	scanf("%d%d%d%d",&a,&b,&c,&d);
  	printf("\nThe sum is:%d",a+b+c+d);
  }
  