Update 'cv3/program.c'

cv3/program.c

@@ -80,7 +80,7 @@ int main() {
         char* a = fgets(input, sizeof(input), stdin);
         if (a == NULL){
         //if (!fgets(input, sizeof(input), stdin)) {
-            printf("no␣input\n");
+            printf("no_input\n");
             break;
         }