Code:#include <stdio.h> #include <stdlib.h> #include <time.h> void correctResponse(void); void incorrectResponse (void); void multiplication( void ); // function prototype int main( void ) { int correct, incorrect; srand( time( NULL ) ); // seed random number generator multiplication(); // begin multiplication practice } // end main void correctResponse(void) { int correct; correct= correct + 1; switch(rand()%4) { case 0: puts("Very good!"); break; case 1: puts("Excellent!"); break; case 2: puts("Good Job!"); break; case 3: puts("You're Amazing!"); break; } } void incorrectResponse(void) { int incorrect; incorrect= incorrect + 1; switch(rand()%4) { case 0: puts("Nice Try"); break; case 1: puts("You Suck!"); break; case 2: puts("Maybe Next Time!"); break; case 3: puts("Terrible!"); break; } } // multiplication produces pairs of random numbers and // prompts user for product void multiplication( void ) { int correct, incorrect; int x; // first factor int y; // second factor int response = 0; // user response for product int total; // use sentinel-controlled repetition puts( "Enter -1 to end." ); // loop while sentinel value not read from user while ( response != -1 ) { x = rand() % 10; // generate 1-digit random number y = rand() % 10; // generate another 1-digit random number printf( "How much is %d times %d? ", x, y ); scanf( "%d", &response ); // loop while not sentinel value or correct response while ( response != -1 && response != x * y ) { incorrectResponse(); scanf( "%d", &response ); } // end while // correct response if ( response != -1 ) { correctResponse(); } // end if } // end while total= (correct/(incorrect+correct)); if (total >= .75) { printf("Congratulations, You are ready for the next level!"); } else { printf("Please ask your Teacher for extra help."); } puts( "That's all for now. Bye." ); } // end function multiplication
// It keeps crashing. How do I compile the responses into a grade? Thank you!
Originally Posted by HystericalFool
