{"id":27960,"date":"2024-03-16T09:31:19","date_gmt":"2024-03-16T09:31:19","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-convert-characters-to-numbers-in-the-c-language-2\/"},"modified":"2024-03-22T12:17:52","modified_gmt":"2024-03-22T12:17:52","slug":"how-to-convert-characters-to-numbers-in-the-c-language-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-convert-characters-to-numbers-in-the-c-language-2\/","title":{"rendered":"How to convert characters to numbers in the C language?"},"content":{"rendered":"

In C language, there are several ways to convert characters to numbers:<\/p>\n

    \n
  1. Converts a string to an integer.<\/li>\n
  2. Include the standard library header file .<\/li>\n<\/ol>\n
    #include<\/span> <stdio.h><\/span><\/span>\r\n#include<\/span> <stdlib.h><\/span><\/span>\r\n\r\nint<\/span> main<\/span>()<\/span> {\r\n    char<\/span> c = '5'<\/span>;\r\n    int<\/span> num = atoi(&c);\r\n    printf<\/span>(\"%d\\n\"<\/span>, num);  \/\/ \u8f93\u51fa\uff1a5<\/span>\r\n    \r\n    return<\/span> 0<\/span>;\r\n}\r\n<\/code><\/pre>\n
      \n
    1. “Read input from string”<\/li>\n
    2. The header file stdio.h.<\/li>\n<\/ol>\n
      #include<\/span> <stdio.h><\/span><\/span>\r\n\r\nint<\/span> main<\/span>()<\/span> {\r\n    char<\/span> c = '7'<\/span>;\r\n    int<\/span> num;\r\n    sscanf<\/span>(&c, \"%d\"<\/span>, &num);\r\n    printf<\/span>(\"%d\\n\"<\/span>, num);  \/\/ \u8f93\u51fa\uff1a7<\/span>\r\n    \r\n    return<\/span> 0<\/span>;\r\n}\r\n<\/code><\/pre>\n
        \n
      1. Converting with ASCII values: Subtracting the ASCII value of the character ‘0’ from the ASCII value of the character itself will give you the corresponding number.<\/li>\n<\/ol>\n
        #include<\/span> <stdio.h><\/span><\/span>\r\n\r\nint<\/span> main<\/span>()<\/span> {\r\n    char<\/span> c = '9'<\/span>;\r\n    int<\/span> num = c - '0'<\/span>;\r\n    printf<\/span>(\"%d\\n\"<\/span>, num);  \/\/ \u8f93\u51fa\uff1a9<\/span>\r\n    \r\n    return<\/span> 0<\/span>;\r\n}\r\n<\/code><\/pre>\n
        The methods above are commonly used for converting characters to numbers, and the specific method used depends on the actual requirements and personal preferences.<\/p>\n","protected":false},"excerpt":{"rendered":"
        In C language, there are several ways to convert characters to numbers: Converts a string to an integer. Include the standard library header file . #include <stdio.h> #include <stdlib.h> int main() { char c = ‘5’; int num = atoi(&c); printf(“%d\\n”, num); \/\/ \u8f93\u51fa\uff1a5 return 0; } “Read input from string” The header file stdio.h. […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-27960","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nHow to convert characters to numbers in the C language? - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/how-to-convert-characters-to-numbers-in-the-c-language-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to convert characters to numbers in the C language?\" \/>\n<meta property=\"og:description\" content=\"In C language, there are several ways to convert characters to numbers: Converts a string to an integer. 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