5

cv3/program.c

@@ -60,6 +60,7 @@ int main() {
     char arr[50];
     char *pend;
     stack_top = -1;
+    bool first_output = true;
 
     while (fgets(arr, 50, stdin)) {
         if (arr[0] == '\n' || arr[0] == EOF) {
@@ -69,11 +70,19 @@ int main() {
         if (is_number(arr)) {
             float number = strtof(arr, &pend);
             push(number);
-            printf("%.2f\n", number);
+            if (!first_output) {
+                printf(" ");
+            }
+            printf("%.2f", number);
+            first_output = false;
         }
         else if (is_operation(arr)) {
             if (stack_top < 1) {
-                printf("no input\n");
+                if (!first_output) {
+                    printf(" ");
+                }
+                printf("no input");
+                first_output = false;
                 continue;
             }
 
@@ -82,20 +91,35 @@ int main() {
             char operation = arr[0];
             float result = calculator(n1, n2, operation);
             push(result);
-            printf("%.2f\n", result);
+            if (!first_output) {
+                printf(" ");
+            }
+            printf("%.2f", result);
+            first_output = false;
         }
         else {
-            printf("no input\n");
+            if (!first_output) {
+                printf(" ");
+            }
+            printf("no input");
+            first_output = false;
             continue;
         }
     }
 
     if (stack_top == 0) {
-        printf("%.2f\n", pop());
+        if (!first_output) {
+            printf(" ");
+        }
+        printf("%.2f", pop());
     } else {
-        printf("no input\n");
+        if (!first_output) {
+            printf(" ");
+        }
+        printf("no input");
     }
 
+    printf("\n");
     return 0;
 }