2022/sector/10/sum solution

2022/sector/10/sum/sum.cpp

@@ -0,0 +1,25 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+ifstream in("test.in");
+ofstream out("test.out");
+
+
+int main() {
+    int sum = 0;
+    char prevSymbol = '+';
+    for (char symbol; in >> symbol;) {
+        if (symbol == prevSymbol) {
+            cout << "error" << endl;
+            return 0;
+        }
+        if (symbol != '+') {
+            sum += symbol - '0';
+        }
+        prevSymbol = symbol;
+    }
+    cout << sum << endl;
+
+    return 0;
+}