{"id":353,"date":"2021-07-12T21:52:36","date_gmt":"2021-07-12T21:52:36","guid":{"rendered":"https:\/\/www.wikitechy.com\/interview-questions\/?p=353"},"modified":"2021-09-14T05:37:50","modified_gmt":"2021-09-14T05:37:50","slug":"what-are-the-advantages-and-disadvantages-of-using-inline-and-const","status":"publish","type":"post","link":"https:\/\/www.wikitechy.com\/interview-questions\/cpp\/what-are-the-advantages-and-disadvantages-of-using-inline-and-const\/","title":{"rendered":"What are the advantages and disadvantages of using inline and const ?"},"content":{"rendered":"
\n
\n

What are the advantages and disadvantages of using inline and const<\/h2>\n<\/div>\n<\/div>\n
\n

Inline:<\/h2>\n<\/div>\n

Advantages:<\/b><\/p>\n

\n
\n
    \n
  • It does not require function calling overhead.<\/li>\n
  • It additionally save overhead of variables push\/pop on the stack, while function calling.<\/li>\n
  • It also save overhead of return call from a function.<\/li>\n
  • It increases locality of reference by utilizing instruction cache.<\/li>\n
  • Inline function may be useful (if it is small) for embedded systems because inline can yield less code than the function call outline and return.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n

    Disadvantages:<\/b><\/p>\n

    \n
    \n
      \n
    • If you use too many inline functions then the size of the binary executable file will be large, because of the duplication of same code.<\/li>\n
    • Too much inlining can also reduce your instruction cache hit rate, thus reducing the speed of instruction fetch from that of cache memory to that of primary memory.<\/li>\n
    • It may cause compilation overhead as if somebody changes code inside inline function than all calling location will also be compiled.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n
      <\/div>\n
      \n

      Const:<\/h2>\n<\/div>\n

      Advantages:<\/b><\/p>\n

      \n
      \n
        \n
      • If you want any variable to keep constant through out the program then you can use const keyword.<\/li>\n
      • It is stored in the read only of the initalized data segment , even the pointer storing it\u2019s location cannot change the value of it, pointer can just change the address to point at some other location.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n

        Disadvantages:<\/b><\/p>\n

        \n
        \n
          \n
        • As the const is not flexible so mostly people use #define which is more flexible than const.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

          Answers : Advantages of inline….<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2080],"tags":[195,2124,2153,2161,491,360,2160,2155,368,211,2149,2152,2148,2125,2126,2127,2128,2129,2130,2131,2132,2133,2134,199,198,363,2135,2150,2151,205,2157,2117,220,222,2122,212,2137,2138,2139,2140,2146,2143,2156,2144,2158,2142,2120,2136,2121,710,207,366,204,217,2116,2123,2145,210,200,2118,2159,2154,2147,968,216,2119,15847],"class_list":["post-353","post","type-post","status-publish","format-standard","hentry","category-cpp","tag-accenture-interview-questions-and-answers","tag-advantages-and-disadvantages-of-inline-function-in-c","tag-advantages-of-const-in-c","tag-advantages-of-inline-functions-c","tag-applied-materials-interview-questions-and-answers","tag-atos-interview-questions-and-answers","tag-benefits-of-inline-functions-in-c","tag-benefits-of-using-const-functions-c-c","tag-bmc-software-interview-questions-and-answers","tag-bosch-india-software-interview-questions-and-answers","tag-c-const","tag-c-const-pointer","tag-c-constant","tag-c-inline","tag-c-implicit-inline","tag-c-inline-a-variable","tag-c-inline-class","tag-c-inline-const-variable","tag-c-inline-function-declaration","tag-c-inline-global-function","tag-c-inline-linkage","tag-c-inline-member-function","tag-c-inline-variable","tag-casting-networks-india-pvt-limited-interview-questions-and-answers","tag-chetu-interview-questions-and-answers","tag-ciena-corporation-interview-questions-and-answers","tag-const-functions","tag-const-pointer","tag-constants-and-variables","tag-dell-international-services-india-pvt-ltd-interview-questions-and-answers","tag-disadvantage","tag-einfochips-interview-questions-and-answers","tag-electronics-arts-inc-interview-questions-and-answers","tag-flipkart-interview-questions-and-answers","tag-harman-international-interview-questions-and-answers","tag-indecomm-global-services-interview-questions-and-answers","tag-inline-and-const-functions-c","tag-inline-constexpr","tag-inline-constexpr-variable","tag-inline-declaration-c","tag-inline-definition","tag-inline-function","tag-inline-function-advantages","tag-inline-function-in-c","tag-inline-functions-in-c","tag-inline-variable-c","tag-larsen-toubro-interview-questions-and-answers","tag-like-virtual-void-function","tag-mathworks-india-private-limited-interview-questions-and-answers","tag-mavenir-interview-questions-and-answers","tag-mphasis-interview-questions-and-answers","tag-netapp-interview-questions-and-answers","tag-oracle-corporation-interview-questions-and-answers","tag-peoplestrong-interview-questions-and-answers","tag-philips-software-centre-pvt-ltd-interview-questions-and-answers","tag-srm-technologies-interview-questions-and-answers","tag-static-inline","tag-symphony-teleca-interview-questions-and-answers","tag-tech-mahindra-interview-questions-and-answers","tag-tecnotree-interview-questions-and-answers","tag-what-are-the-advantages-and-disadvantages-of-inline-function","tag-what-are-the-advantages-of-using-const","tag-what-is-inline-function","tag-wipro-infotech-interview-questions-and-answers","tag-wipro-interview-questions-and-answers","tag-yash-technologies-interview-questions-and-answers","tag-zimmer-biomet-interview-questions-and-answers"],"yoast_head":"\nWhat are the advantages and disadvantages of using inline and const ?<\/title>\n<meta name=\"description\" content=\"What are the advantages and disadvantages of using inline and const ? - 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