// creating a simle calculator for basic arithmatics operation #include <stdio.h> #include<math.h> int main(){ // making simple calculator int n; float n1,n2,result; printf("now enter first numbers "); scanf("%f",&n1); printf("now enter second numbers "); scanf("%f",&n2); printf("Firstly enter the task you have to do "); printf("\n Press numbers according to following output:\n"); printf("addition (1), substraction (2), division (3), multiplication (4) " ); scanf("%d ",&n); if(n==1){ result = n1+n2; printf("you choose additon\n "); printf("%f",result); } else if(n==2){ result = n1-n2; printf("you choose substraction \n "); printf("%f",result); } else if(n==3){ printf("you choose divison\n"); if(n2==0){ printf("undertermined number"); } else{ result=n1/n2; printf("%f",result); } } else{ result = n1*n2; printf("you choose amultiplication\n "); printf("%f",result); } return 0; }