This C Language program reads a sequence of positive integers from the console, given by the user, and prints them out together with their sum. Use a Sentinel value (say 0) to determine when the sequence has terminated. So wehenever the user will enter 0 the program will stop taking input and calculate the sum and out put it on the screen.

/******************************************************* * MYCPLUS Sample Code - http://www.mycplus.com * * * * This code is made available as a service to our * * visitors and is provided strictly for the * * purpose of illustration. * * * * Please direct all inquiries to saqib at mycplus.com * *******************************************************/ //Read a sequence of positive integers and //print them out together with their sum. //Use a Sentinel value (say 0) to determine when the sequence has terminated. #define SENTINEL 0 int main(void) { int sum = 0; /* The sum of numbers already read */ int current; /* The number just read */ do { printf("\nEnter an integer > "); scanf("%d", &t); if (current > SENTINEL){ sum = sum + current; } } while (current > SENTINEL); printf("\nThe sum of all the numbers is = %d\n", sum); }