committing everything squashed

01/main1.c

@@ -0,0 +1,20 @@
+#include <stdio.h>
+
+int main(void) {
+    int c, num1, num2, sum;
+    num1 = 0;
+    num2 = 0;
+    sum = 0;
+    while ((c = fgetc(stdin)) != EOF) {
+        if (c >= '0' && c <= '9') {
+            num1 = num1 == 0 ? c - '0' : num1;
+            num2 = c - '0';
+        } else if (c == '\n') {
+            sum += num1*10 + num2;
+            num1 = 0;
+        }
+    }
+    printf("%d\n", sum);
+    return 0;
+}
+