Added safegards against Windows

.gitignore

@@ -1,3 +1,3 @@
 *.out
 2021/
-!2021/0
+!2021/0/

2021/0/mensagem.c

@@ -13,7 +13,7 @@ int main(){
             }
             output = 'A' + 5 * (c - '0');
             scanf("%c", &c);
-            output += (c - '0');
+            output += c - '0';
             if (output <= 'Z'){
                 printf("%c", output);
                 continue;

2021/0/ninja.c

@@ -1,11 +1,12 @@
 #include <stdio.h>
+#include <ctype.h>
 
 int main () {
     int n = 0;
     char c;
 
     for (scanf("%d\n", &n); n > 0; n--) {
-        while (scanf("%c", &c) && c != '\n') {
+        while (scanf("%c", &c) != EOF && !iscntrl(c)) {
             switch (c) {
                 case 'D':
                     printf("Rolada tatica ninja.\n");
@@ -24,9 +25,9 @@ int main () {
                     break;
                 case 'A':
                     printf("Nem ferrando. Vou de agentes mesmo.\n");
-                    break;
             }
         }
+        scanf(" ");
     }
     return 0;
 }