#include
int main(void) {
int total, i, j;
total = 0;
do {
printf("Enter a number (0 to stop): ");
scanf("%d", &i);
printf("Enter the number again: ");
scanf("%d", &j);
if(i != j) {
printf("Mismatch\n");
continue;
}
total = total + i;
} while(i);
printf("Total is %d\n", total);
return 0;
}