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Implement almost all of printf

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This commit is contained in:
jD91mZM2
2018-10-13 14:13:04 +02:00
parent b517629371
commit 63882684b2
13 changed files with 713 additions and 185 deletions
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tests/stdio/printf.c
+37 -2
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@@ -1,17 +1,52 @@
#include <stdio.h>
int main(int argc, char ** argv) {
int sofar = 0;
int len = printf(
"percent: %%\nstring: %s\nchar: %c\nchar: %c\nint: %d\nuint: %u\nhex: %x\nHEX: %X\nstring: %s\n",
"percent: %%\nstring: %s\nchar: %c\nchar: %c\nint: %d\n%nuint: %u\nhex: %x\nHEX: %X\nstring: %s\n",
"String",
'c',
254,
-16,
&sofar,
32,
0xbeef,
0xC0FFEE,
"end"
);
printf("len of previous write: %d\n", len);
printf("%%n returned %d, total len of write: %d\n", sofar, len);
puts("\nPadding madness:");
printf("% -5.3d %+3d\n", 1, 2);
printf("%4c\n", 'c');
printf("%#10.7x\n", 0xFF);
printf("%#4.3o\n", 01);
printf("%#x %#x\n", 0, 1);
printf("%.0d %.0d\n", 0, 1);
printf("(%05d) (%5d)\n", 123, 123);
printf("(%05d) (%5d)\n", -123, -123);
printf("(%13.0d)\n", 0);
printf("%p\n", (void*) 0xABCDEF);
printf("%p\n", (void*) 0);
puts("\nPositional madness:");
printf("%3$d %2$d %1$d\n", 2, 3, 4);
printf("%.*3$d\n", 2, 0, 5);
printf("|%-*6$.*5$s|%-*6$.*5$s|%*6$.*5$s|%*6$.*5$s|\n", "Fizz", "Buzz", "FizzBuzz", "TotalBuzz", 3, 8);
puts("\nFloat madness:");
printf("%20e\n", 123.456789123);
printf("%20E\n", 0.00001);
printf("%20f\n", 123.456789123);
printf("%20F\n", 0.00001);
printf("%20e\n", -123.456789123);
printf("%020e\n", -123.456789123);
printf("%g\n", 100000.0);
printf("%g\n", 1000000.0);
printf("%e\n", 1000000.0);
printf("%G\n", 0.0001);
printf("%G\n", 0.00001);
printf("%E\n", 0.00001);
return 0;
}