C语言里面的“%lf”是什么意思？ c语言中的%lf是什么意思？
C\u8bed\u8a00\u91cc\u9762\u7684%lf\u662f\u8868\u793a\u4ec0\u4e48\u610f\u601d%lf\u662fC\u8bed\u8a00\u4e2ddouble\u7684\u683c\u5f0f\u5b57\u7b26\uff0c\u7528\u4e8e\u683c\u5f0f\u5316\u8f93\u5165\u8f93\u51fa\u3002
double\u4e3a\u53cc\u7cbe\u5ea6\u6d6e\u70b9\u7c7b\u578b\uff0c\u53608\u5b57\u8282\u7a7a\u95f4\u3002
\u5b9a\u4e49\u4e00\u4e2adouble\u7684\u53d8\u91cf\u53ef\u4ee5\u5199\u4f5c\uff1a
double a;
\u8f93\u5165\u8bed\u53e5\u53ef\u4ee5\u5199\u4f5c:
scanf("%lf", &a);
\u8f93\u51fa\u8bed\u53e5\u53ef\u4ee5\u5199\u4f5c\uff1a
printf("%lf",a);
\u8fd9\u91cc\u7684printf\u548cscanf\u4e2d\uff0c\u5c31\u662f%lf\u7684\u7528\u6cd5\u4e86\u3002
\u662f\u8f93\u5165\u8f93\u51fa\u683c\u5f0f\u8bf4\u660e\u7b26\u3002
C\u8bed\u8a00\u662f\u4e00\u95e8\u9762\u5411\u8fc7\u7a0b\u7684\u3001\u62bd\u8c61\u5316\u7684\u901a\u7528\u7a0b\u5e8f\u8bbe\u8ba1\u8bed\u8a00\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5e95\u5c42\u5f00\u53d1\u3002C\u8bed\u8a00\u80fd\u4ee5\u7b80\u6613\u7684\u65b9\u5f0f\u7f16\u8bd1\u3001\u5904\u7406\u4f4e\u7ea7\u5b58\u50a8\u5668\u3002
C\u8bed\u8a00\u4e4b\u6240\u4ee5\u547d\u540d\u4e3aC\uff0c\u662f\u56e0\u4e3aC\u8bed\u8a00\u6e90\u81eaKen Thompson\u53d1\u660e\u7684B\u8bed\u8a00\uff0c\u800cB\u8bed\u8a00\u5219\u6e90\u81eaBCPL\u8bed\u8a00\u3002
1967\u5e74\uff0c\u5251\u6865\u5927\u5b66\u7684Martin Richards\u5bf9CPL\u8bed\u8a00\u8fdb\u884c\u4e86\u7b80\u5316\uff0c\u4e8e\u662f\u4ea7\u751f\u4e86BCPL\uff08Basic Combined Programming Language\uff09\u8bed\u8a00\u3002
20\u4e16\u7eaa60\u5e74\u4ee3\uff0c\u7f8e\u56fdAT&T\u516c\u53f8\u8d1d\u5c14\u5b9e\u9a8c\u5ba4\uff08AT&T Bell Laboratories\uff09\u7684\u7814\u7a76\u5458\u80af\u00b7\u6c64\u666e\u68ee\uff08Kenneth Lane Thompson\uff09\u95f2\u6765\u65e0\u4e8b\uff0c\u624b\u75d2\u96be\u8010\uff0c\u60f3\u73a9\u4e00\u4e2a\u4ed6\u81ea\u5df1\u7f16\u7684\uff0c\u6a21\u62df\u5728\u592a\u9633\u7cfb\u822a\u884c\u7684\u7535\u5b50\u6e38\u620f\u2014\u2014Space Travel\u3002\u4ed6\u80cc\u7740\u8001\u677f\uff0c\u627e\u5230\u4e86\u53f0\u7a7a\u95f2\u7684\u5c0f\u578b\u8ba1\u7b97\u673a\u2014\u2014PDP-7\u3002
\u4f46\u8fd9\u53f0\u7535\u8111\u6ca1\u6709\u64cd\u4f5c\u7cfb\u7edf\uff0c\u800c\u6e38\u620f\u5fc5\u987b\u4f7f\u7528\u64cd\u4f5c\u7cfb\u7edf\u7684\u4e00\u4e9b\u529f\u80fd\uff0c\u4e8e\u662f\u4ed6\u7740\u624b\u4e3aPDP-7\u5f00\u53d1\u64cd\u4f5c\u7cfb\u7edf\u3002\u540e\u6765\uff0c\u8fd9\u4e2a\u64cd\u4f5c\u7cfb\u7edf\u88ab\u547d\u540d\u4e3a\u2014\u2014UNICS\uff08Uniplexed Information and Computing Service\uff09\u3002
1969\u5e74\uff0c\u7f8e\u56fd\u8d1d\u5c14\u5b9e\u9a8c\u5ba4\u7684Ken Thompson\uff0c\u4ee5BCPL\u8bed\u8a00\u4e3a\u57fa\u7840\uff0c\u8bbe\u8ba1\u51fa\u5f88\u7b80\u5355\u4e14\u5f88\u63a5\u8fd1\u786c\u4ef6\u7684B\u8bed\u8a00\uff08\u53d6BCPL\u7684\u9996\u5b57\u6bcd\uff09\uff0c\u5e76\u4e14\u7528B\u8bed\u8a00\u5199\u4e86\u521d\u7248UNIX\u64cd\u4f5c\u7cfb\u7edf\uff08\u53ebUNICS\uff09\u3002
1971\u5e74\uff0c\u540c\u6837\u9177\u7231Space Travel\u7684\u4e39\u5c3c\u65af\u00b7\u91cc\u5947\u4e3a\u4e86\u80fd\u65e9\u70b9\u513f\u73a9\u4e0a\u6e38\u620f\uff0c\u52a0\u5165\u4e86\u6c64\u666e\u68ee\u7684\u5f00\u53d1\u9879\u76ee\uff0c\u5408\u4f5c\u5f00\u53d1UNIX\u3002\u4ed6\u7684\u4e3b\u8981\u5de5\u4f5c\u662f\u6539\u9020B\u8bed\u8a00\uff0c\u4f7f\u5176\u66f4\u6210\u719f\u3002
”%lf“是输入输出格式说明符，按double型进行输入或输出。
【举例】：
double a; // 定义一个double型变量，用来保存用户输入的数据
scanf("%lf", &a); // 接收用户输入的数据，并转化为double型，并赋值给变量a
printf("%lf", a); // 按变量a的值按double型输出
%lf是输入输出格式说明符。
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绛旓細2016-07-25 C璇█涓%lf%lf涓%lf,%lf鍖哄埆? 4 2011-02-22 C璇█閲岄潰鐨%lf鏄粈涔堟剰鎬,澶уぇ浠瑙ｉ噴,璇︾粏鏇村ソ銆 155 2015-05-01 璇烽棶c璇█涓,%c %d %f %lf鍒嗗埆鏄粈涔堟剰鎬濆摝 15 2011-05-07 c璇█%lf鏄粈涔? 150 2014-06-12 C璇█閲岀殑%lf,%.2lf,%.2f鏄粈涔堟剰鎬? 477 鏇村...
