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11
education/software development/ECE1400/C.md
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@ -30,4 +30,13 @@ A variable must be declared before it is assigned.
| Specifier | Function |
| --------- | ---------------------------------------------------------------------------------------------------------------------------------------- |
| `%d` | Display an integer |
| `%f` | Display a float. Specify the number of places to round to by adding a decimal and a number, eg `%.2f` would round to two decimal places. |
| `%f` | Display a float. Specify the number of places to round to by adding a decimal and a number, eg `%.2f` would round to two decimal places. |
For number formatting specifiers, the convention is as follows:
`%-a.bX`
`%`: Start of the formatting specifier
`-`: (optional) If included, justify value left in space. Otherwise, justify right in space
`a`: (optional) If included, the size of the field in characters.
`.`: Separator between `a` and `b`. Optional if `b` is not specified
`b`: The number of decimal places to round to
`X`: The type of format to use, and the end of the specifier. Use `d` for integer base 10 (decimal) representation, `f` for fixed point decimal, and `e` for exponential notation
# Standard library

9
education/software development/ECE1400/Chapter 3 Exercises.md
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@ -8,12 +8,13 @@ d. `1e-06 `
```c
float x = 0.12345;
// a
printf("%-8.1f", x);
printf("%-8.1e", x);
// b
printf("%10.6f", x);
printf("%10.6e", x);
// c
printf("%8.3f", x);
// d
printf("%-6.0g", x);
printf("%-6.0f", x);
```
c.
# 3.