Question

write a c program that prompts a user to enter two numbers ,the system must display the summation of the number?

Answer 1

#include <stdio.h>
#include <stdlib.h>
//main function
int main(){
double summation;//variable for sum
double firstnumber;
double secondnumber;
//prompt user to enter first number
printf("Enter first number: ");
//read first number
scanf("%lf",&firstnumber);
//promt user to enter second number
printf("Enter second number: ");
//read second number
scanf("%lf",&secondnumber);
summation=firstnumber+secondnumber;//add
//the system must display the summation of the number
printf("The summation of the number = %.3f\n",summation);
system("PAUSE");//delay
return 0;
}