Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision | ||
| 184_notes:if [2022/05/06 22:02] – woodsna1 | 184_notes:if [2022/05/07 01:21] (current) – woodsna1 | ||
|---|---|---|---|
| Line 1: | Line 1: | ||
| ====== Coding: "If Statements" | ====== Coding: "If Statements" | ||
| + | ==== Lecture Video ==== | ||
| + | |||
| + | {{youtube> | ||
| Sometimes, we only want the computer to execute code in specific cases. For instance, only divide if the denominator is nonzero. How can the computer decide if the denominator is nonzero? One way is by using an if statement: | Sometimes, we only want the computer to execute code in specific cases. For instance, only divide if the denominator is nonzero. How can the computer decide if the denominator is nonzero? One way is by using an if statement: | ||
| < | < | ||
| Line 18: | Line 21: | ||
| quotient = 999999 | quotient = 999999 | ||
| </ | </ | ||
| - | In this code, the quotient will be set to some high number when the denominator is 0, instead of trying to calculate the true quotient. Code contained in else clauses only executes when the if statement' | + | In this code, the quotient will be set to some high number when the denominator is 0, instead of trying to calculate the true quotient. Code contained in else clauses only executes when the if statement' |
| ===== Nesting If Statements ===== | ===== Nesting If Statements ===== | ||
| + | ==== Lecture Video ==== | ||
| + | {{youtube> | ||
| Similarly to loops, we can use nested if statements: | Similarly to loops, we can use nested if statements: | ||
| < | < | ||