{"id":353,"date":"2012-10-15T18:47:28","date_gmt":"2012-10-15T18:47:28","guid":{"rendered":"https:\/\/raspberry-projects.com\/pi\/?p=353"},"modified":"2020-01-13T22:51:28","modified_gmt":"2020-01-13T22:51:28","slug":"variables","status":"publish","type":"post","link":"https:\/\/raspberry-projects.com\/pi\/programming-in-c\/memory\/variables","title":{"rendered":"Variables"},"content":{"rendered":"
For Raspberry Pi with a 32-bit processor<\/h5>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Name<\/strong><\/td>\nC++<\/strong><\/td>\nBytes<\/strong><\/td>\nRange<\/strong><\/td>\n<\/tr>\n
bool<\/td>\n<\/td>\n1<\/td>\ntrue or false<\/td>\n<\/tr>\n
signed char<\/td>\nint8_t<\/td>\n1<\/td>\n-128 to 127<\/td>\n<\/tr>\n
unsigned char<\/td>\nuint8_t<\/td>\n1<\/td>\n0 to 255<\/td>\n<\/tr>\n
short int<\/td>\nint16_t<\/td>\n2<\/td>\n-32768 to 32767<\/td>\n<\/tr>\n
unsigned\u00a0short int<\/td>\nuint16_t<\/td>\n2<\/td>\n0 to 65535<\/td>\n<\/tr>\n
int<\/td>\nint32_t<\/td>\n4<\/td>\n-2147483648 to 2147483647<\/td>\n<\/tr>\n
unsigned int<\/td>\nuint32_t<\/td>\n4<\/td>\n0 to 4294967295<\/td>\n<\/tr>\n
long\u00a0int<\/td>\nint32_t<\/td>\n4<\/td>\n-2147483648 to 2147483647<\/td>\n<\/tr>\n
unsigned\u00a0long\u00a0int<\/td>\nuint32_t<\/td>\n4<\/td>\n0 to 4294967295<\/td>\n<\/tr>\n
long long<\/td>\nint64_t<\/td>\n8<\/td>\n\u22129,223,372,036,854,775,808 to 9,223,372,036,854,775,807<\/td>\n<\/tr>\n
unsigned long long<\/td>\nuint64_t<\/td>\n8<\/td>\n0 to 18,446,744,073,709,551,615<\/td>\n<\/tr>\n
float<\/td>\n<\/td>\n4<\/td>\n+\/- 3.4e +\/- 38 (~7 digits)<\/td>\n<\/tr>\n
double<\/td>\n<\/td>\n8<\/td>\n+\/- 1.7e +\/- 308 (~15 digits)<\/td>\n<\/tr>\n
long double<\/td>\n<\/td>\n8<\/td>\n+\/- 1.7e +\/- 308 (~15 digits)<\/td>\n<\/tr>\n
wchar_t<\/td>\n<\/td>\n2 or 4<\/td>\n1 wide character<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
For Raspberry Pi with a 64-bit processor<\/h5>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Name<\/strong><\/td>\nC++<\/strong><\/td>\nBytes<\/strong><\/td>\nRange<\/strong><\/td>\n<\/tr>\n
bool<\/td>\n<\/td>\n1<\/td>\ntrue or false<\/td>\n<\/tr>\n
signed char<\/td>\nint8_t<\/td>\n1<\/td>\n-128 to 127<\/td>\n<\/tr>\n
unsigned char<\/td>\nuint8_t<\/td>\n1<\/td>\n0 to 255<\/td>\n<\/tr>\n
short int<\/td>\nint16_t<\/td>\n2<\/td>\n-32768 to 32767<\/td>\n<\/tr>\n
unsigned\u00a0short int<\/td>\nuint16_t<\/td>\n2<\/td>\n0 to 65535<\/td>\n<\/tr>\n
int<\/td>\nint64_t<\/td>\n8<\/td>\n\u22129,223,372,036,854,775,808 to 9,223,372,036,854,775,807<\/td>\n<\/tr>\n
unsigned int<\/td>\nuint64_t<\/td>\n8<\/td>\n0 to 18,446,744,073,709,551,615<\/td>\n<\/tr>\n
long\u00a0int<\/td>\nint64_t<\/td>\n8<\/td>\n\u22129,223,372,036,854,775,808 to 9,223,372,036,854,775,807<\/td>\n<\/tr>\n
unsigned\u00a0long\u00a0int<\/td>\nuint64_t<\/td>\n8<\/td>\n0 to 18,446,744,073,709,551,615<\/td>\n<\/tr>\n
long long<\/td>\nint64_t<\/td>\n8<\/td>\n\u22129,223,372,036,854,775,808 to 9,223,372,036,854,775,807<\/td>\n<\/tr>\n
unsigned long long<\/td>\nuint64_t<\/td>\n8<\/td>\n0 to 18,446,744,073,709,551,615<\/td>\n<\/tr>\n
float<\/td>\n<\/td>\n4<\/td>\n+\/- 3.4e +\/- 38 (~7 digits)<\/td>\n<\/tr>\n
double<\/td>\n<\/td>\n8<\/td>\n+\/- 1.7e +\/- 308 (~15 digits)<\/td>\n<\/tr>\n
long double<\/td>\n<\/td>\n8<\/td>\n+\/- 1.7e +\/- 308 (~15 digits)<\/td>\n<\/tr>\n
wchar_t<\/td>\n<\/td>\n2 or 4<\/td>\n1 wide character<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

For Raspberry Pi with a 32-bit processor Name C++ Bytes Range bool 1 true or false signed char int8_t 1 -128 to 127 unsigned char uint8_t 1 0 to 255 short int int16_t 2 -32768 to 32767 unsigned\u00a0short int uint16_t 2 0 to 65535 int int32_t 4 -2147483648 to 2147483647 unsigned int uint32_t 4 0 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21],"tags":[],"class_list":["post-353","post","type-post","status-publish","format-standard","hentry","category-memory"],"_links":{"self":[{"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/posts\/353","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/comments?post=353"}],"version-history":[{"count":9,"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/posts\/353\/revisions"}],"predecessor-version":[{"id":3135,"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/posts\/353\/revisions\/3135"}],"wp:attachment":[{"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/media?parent=353"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/categories?post=353"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/raspberry-projects.com\/pi\/wp-json\/wp\/v2\/tags?post=353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}