printf long double
For input you're passing a pointer, which is not promoted, so you have to tell scanf whether you want to read a float or a double , so for scanf , %f means you want to read a float and %lf means you want to read a double (and, for what it's worth, In addition to the wrong modifier, which port of gcc to Windows? mingw uses the Microsoft C library and I seem to remember that that this library has no support for 80bits long double (microsoft C compiler use 64 bits long double for various reasons)., For long double you should use format "%Lf" . Formatting with small L (i.e. "%lf" ) have no effect on POSIX systems (see the specification)., The right format specifier for long double in printf() is "%Lf".,"%f" is the (or at least one) correct format for a double. There is no format for a float , because if you attempt to pass a float to printf , it'll be promoted to double before printf receives it . "%lf" is also acceptable under t,(註: 對printf 而言, %f/%lf 可適用於double / float) %lf : 倍精度浮點數(預設輸出精度6位), double x; %llf, %LF : 雙倍精度浮點數(預設輸出精度6位), long double x; %g, %G : 由系統決定是否採科學符號表示。 (1.4) 特殊 原創：edisonx.pixnet.net. %p : 變數位置。 ex: int a=0, printf("%p", &a); 即printf("%08x&,看起來好像window上的C compiler 對long沒支援.. 可是long double n; scanf("%lf" , &n); printf("%lf-n" , n); 當我輸入123.4是可以正確印出123.400000 連結中的那一篇有寫不能支援80bit以上.. this library has no support for 80bits long double (microsoft C compiler use 64 bits long,用來表示小數值，可以區分為 float 、 double 與 long double ，在64 位元Ubuntu 16.04 中的 gcc 編譯器下， float 的長度為4 個位元組， double 的長度為8 個位元組， long ... <stdlib.h> int main(void) printf("型態-t-t大小（bytes）-n"); printf("short-t-t%lu-n", sizeof(short)); printf(&qu
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 printf long double 相關參考資料
c - Correct format specifier for double in printf - Stack Overflow
For input you're passing a pointer, which is not promoted, so you have to tell scanf whether you want to read a float or a double , so for scanf , %f means you want to read a float and %lf means ... https://stackoverflow.com c - printf and long double - Stack Overflow
In addition to the wrong modifier, which port of gcc to Windows? mingw uses the Microsoft C library and I seem to remember that that this library has no support for 80bits long double (microsoft C co... https://stackoverflow.com c++ - What is format specifier for `long double` - Stack Overflow
For long double you should use format "%Lf" . Formatting with small L (i.e. "%lf" ) have no effect on POSIX systems (see the specification). https://stackoverflow.com how to printf long double in C? - Stack Overflow
The right format specifier for long double in printf() is "%Lf". https://stackoverflow.com What is the format specifier of long double in C? - Quora
"%f" is the (or at least one) correct format for a double. There is no format for a float , because if you attempt to pass a float to printf , it'll be promoted to double before printf r... https://www.quora.com [C] printf 引數說明@ Edison.X. Blog :: 痞客邦::
(註: 對printf 而言, %f/%lf 可適用於double / float) %lf : 倍精度浮點數(預設輸出精度6位), double x; %llf, %LF : 雙倍精度浮點數(預設輸出精度6位), long double x; %g, %G : 由系統決定是否採科學符號表示。 (1.4) 特殊 原創：edisonx.pixnet.net. %p : 變數位置。 ex: int a... http://edisonx.pixnet.net [問題] double印出的問題- 看板C_and_CPP - 批踢踢實業坊
看起來好像window上的C compiler 對long沒支援.. 可是long double n; scanf("%lf" , &n); printf("%lf-n" , n); 當我輸入123.4是可以正確印出123.400000 連結中的那一篇有寫不能支援80bit以上.. this library has no support for 80... https://www.ptt.cc 資料型態（Data type） - OpenHome.cc
用來表示小數值，可以區分為 float 、 double 與 long double ，在64 位元Ubuntu 16.04 中的 gcc 編譯器下， float 的長度為4 個位元組， double 的長度為8 個位元組， long ... <stdlib.h> int main(void) printf("型態-t-t大小（bytes）-n"); printf... https://openhome.cc |