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Merge pull request #157 from chrboesch/e64

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fixed: https://github.com/ratfactor/ziglings/issues/156
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Chris Boesch 2023-01-14 12:38:27 +01:00 committed by GitHub
commit 318873a0fc
1 changed files with 2 additions and 4 deletions
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6
exercises/064_builtins.zig
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@ -38,14 +38,12 @@ pub fn main() void {
// Let's try it with a tiny 4-bit integer size to make it clear: // Let's try it with a tiny 4-bit integer size to make it clear:
const a: u4 = 0b1101; const a: u4 = 0b1101;
const b: u4 = 0b0101; const b: u4 = 0b0101;
var my_result: u4 = undefined; const my_result = @addWithOverflow(a, b);
var overflowed: bool = undefined;
overflowed = @addWithOverflow(u4, a, b, &my_result);
// Check out our fancy formatting! b:0>4 means, "print // Check out our fancy formatting! b:0>4 means, "print
// as a binary number, zero-pad right-aligned four digits." // as a binary number, zero-pad right-aligned four digits."
// The print() below will produce: "1101 + 0101 = 0010 (true)". // The print() below will produce: "1101 + 0101 = 0010 (true)".
print("{b:0>4} + {b:0>4} = {b:0>4} ({})", .{ a, b, my_result, overflowed }); print("{b:0>4} + {b:0>4} = {b:0>4} ({s})", .{ a, b, my_result[0], if (my_result[1] == 1) "true" else "false" });
// Let's make sense of this answer. The value of 'b' in decimal is 5. // Let's make sense of this answer. The value of 'b' in decimal is 5.
// Let's add 5 to 'a' but go one by one and see where it overflows: // Let's add 5 to 'a' but go one by one and see where it overflows: