BUG: the return value of scanf should not be ignored

2026-04-25 15:49:08 -05:00 · 2008-11-25 09:52:21 -05:00
parent 26c7a187b4
commit 47aa926523
1 changed files with 5 additions and 1 deletions
@@ -70,7 +70,11 @@ int main(int ac, char *av[])
    printf("To run a test, enter the test number: ");
    fflush(stdout);
    testNum = 0;
-    scanf("%d", &testNum);
+    if( scanf("%d", &testNum) != 1 )
+      {
+      printf("Couldn't parse that input as a number\n");
+      return -1;
+      }
    if (testNum >= NumTests)
      {
      printf("%3d is an invalid test number.\n", testNum);