IPC144 Lab #3

IPC144 Lab 3 – if-else Statements (Mr. Saul's Sections)

NOTE: Log into your Matrix account, and place the answers to STEPS 1,2,3,4 & 5 into a file called lab3.txt

NOTE: When you have completed this lab, and placed answers into the file called "lab3.txt", follow the instructions (at the bottom of this lab) to submit your answers to Murray Saul's e-mail account...

STEP 1:  Enter, compile and run the following program (call it lab3a.c):

   main( ) { /* 1 simple if statement */
      int x, y;
      printf("Enter two numbers x and y: ");
      scanf("%d %d", &x, &y);
      if (x < y)
         printf("Condition is true: x is less than y\n");
      }

INPUTS

OUTPUT

YOUR EXPLANATION

2 3

 

 

3 2

 

 

3 3

 

 

STEP 2:  Change lab3a.c to the following and save under the name lab3b.c:

   main( ) { /* 2 simple if statements */
      int x, y;
      printf("Enter two numbers x and y: ");
      scanf("%d %d", &x, &y);
      if (x < y)
         printf("Condition 1 is true: x is less than y\n");
      if (y < x)
         printf("Condition 2 is true: x is not less than y\n");
   }

INPUTS

OUTPUT

YOUR EXPLANATION

2 3

 

 

3 2

 

 

3 3

 

 

STEP 3:  Change lab3b.c to the following and save under the name lab3c.c:

   main( ) {  /* 1 if-else statement */
      int x, y;
      printf("Enter two numbers x and y: ");
      scanf("%d %d", &x, &y);
      if (x < y)
         printf("Condition is true: x is less than y\n");
      else
         printf("Condition is false: x is not less than y\n");
   }

INPUTS

OUTPUT

YOUR EXPLANATION

2 3

 

 

3 2

 

 

3 3

 

 

STEP 4:  Change lab3c.c to the following and save under the name lab3d.c:

   main( ) {  /* 1 if-else statement and 1 simple if statement */
      int x, y;
      printf("Enter two numbers x and y: ");
      scanf("%d %d", &x, &y);
      if (x < y)
         printf("Condition 1 is true: x is less than y\n");
      else
         printf("Condition 1 is false: x is not less than y\n");
     if (x == y)
               printf("Condition 2 is true: x equal to y\n");
   }
 

INPUTS

OUTPUT

YOUR EXPLANATION

2 3

 

 

3 2

 

 

3 3

 

 

 

STEP 5: Change lab3d.c to the following and save under the name lab3e.c:

   main( ) { /* 1 if-else if-else (nested if) statement */
      int x;
      int y;
      printf("Enter two numbers x and y: ");
      scanf("%d %d", &x, &y);
      if (x < y)
         printf("Condition 1 is True: x is less than y\n");
      else if (y < x)
         printf("Cond'n 1 is False + Cond'n 2 is True: y is less than x\n");
      else
         printf("Cond'ns 1 and 2 are false: x is equal to y\n");
   }
 

INPUTS

OUTPUT

YOUR EXPLANATION

2 3

 

 

3 2

 

 

3 3

 

 

 
 
 

Submission Requirements:

If you are in Murray Saul's class, issue the following command to send your lab #3 answers to Murray Saul:

mail -s "144lab3" -c $USER@learn.senecac.on.ca murray.saul@senecac.on.ca < lab3.txt

The option -s "144lab3" makes subject line appear as "144lab3" so instructor can filter these e-mails in a directory to collect all lab3 submissions.

The option -c $USER@learn.senecac.on.ca sends a copy of the e-mail message to YOUR learn account. The variable $USER is your Matrix id name assuming that you are issuing this command when logged into your Matrix account. Please keep this e-mail for the remainder of this term as proof that you sent your lab by the required deadline...