Introduction to Programming

Implementation Details

Psuedocode

1. Pick up dictionary
2. Open to middle of dictionary
3. Look at page
4. If word is on page
5.     Read word definition
6. Else if word is earlier in dictionary
7.     Open to middle of left half of dictionary
8.     Go back to line 3
9. Else if word is later in dictionary
10.     Open to middle of right half of dictionary
11.     Go back to line 3
12. Else
13.     Quit

1. Pick up dictionary
2. Open to middle of dictionary
3. Look at page
4. If word is on page
5.     Read word definition
6. Else if word is earlier in dictionary
7.     Open to middle of left half of dictionary
8.     Go back to line 3
9. Else if word is later in dictionary
10.     Open to middle of right half of dictionary
11.     Go back to line 3
12. Else
13.     Quit

1. Pick up dictionary
2. Open to middle of dictionary
3. Look at page
4. If word is on page
5.     Read word definition
6. Else if word is earlier in dictionary
7.     Open to middle of left half of dictionary
8.     Go back to line 3
9. Else if word is later in dictionary
10.     Open to middle of right half of dictionary
11.     Go back to line 3
12. Else
13.     Quit

1. Pick up dictionary
2. Open to middle of dictionary
3. Look at page
4. If word is on page
5.     Read word definition
6. Else if word is earlier in dictionary
7.     Open to middle of left half of dictionary
8.     Go back to line 3
9. Else if word is later in dictionary
10.     Open to middle of right half of dictionary
11.     Go back to line 3
12. Else
13.     Quit

1. Pick up dictionary
2. Open to middle of dictionary
3. Look at page
4. If word is on page
5.     Read word definition
6. Else if word is earlier in dictionary
7.     Open to middle of left half of dictionary
8.     Go back to line 3
9. Else if word is later in dictionary
10.     Open to middle of right half of dictionary
11.     Go back to line 3
12. Else
13.     Quit

• Functions
  • arguments, return values
• Conditionals
• Boolean expressions
• Loops
• Variables

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#include <stdio.h>

int main(void)
{
    printf("hello, world\n");
}

print('hello, world!')