{"id":145138,"date":"2025-05-26T15:04:46","date_gmt":"2025-05-26T09:34:46","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=145138"},"modified":"2025-05-26T15:04:46","modified_gmt":"2025-05-26T09:34:46","slug":"how-to-create-login-application-using-c","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/how-to-create-login-application-using-c\/","title":{"rendered":"C Project &#8211; How to Create Login Page"},"content":{"rendered":"<h3>Program 1<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">#include&lt;stdio.h&gt;\r\n#include&lt;conio.h&gt;\r\n#define clrscr() system(\"cls\")\r\nint main()\r\n{\r\n    clrscr();\r\n     char ch1,ch2,ch3,ch4;\r\n     static int i=0;\r\n   pin: printf(\"\\nEnter pin(only 4 digit): \");\r\n    ch1=getch();\r\n    printf(\"*\");\r\n    ch2=getch();\r\n    printf(\"*\");\r\n    ch3=getch();\r\n    printf(\"*\");\r\n    ch4=getch();\r\n    printf(\"*\");\r\n    if(ch1=='1' &amp;&amp; ch2=='2' &amp;&amp; ch3=='3' &amp;&amp; ch4=='4' ) \r\n        printf(\"\\n You are valid user............. WEL COME\");\r\n    else\r\n    {\r\n         i++;\r\n         if(i==3)\r\n         {\r\n            printf(\"\\n ..........Contact to admin your account is locked................ \");\r\n            exit(0);\r\n         }\r\n         else\r\n         {\r\n          printf(\"\\n Pin is incorrect enter again: \");\r\n          goto pin;\r\n         }  \r\n    }\r\n\r\n    return 0;\r\n}<\/pre>\n<h3>Program 2<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">#include&lt;stdio.h&gt;\r\n#include&lt;conio.h&gt;\r\n#define clrscr() system(\"cls\")\r\nint main()\r\n{\r\n      char user[50], password[50],ch;\r\n      int i=0;\r\n      clrscr();\r\n      printf(\"Enter User Name: \");\r\n      gets(user);\r\n      printf(\"Enter Password(for exit press enter or tab) :  \");\r\n      while(1)\r\n      {\r\n            ch=getch();\r\n            if(ch==9 || ch==13)\r\n            break;\r\n            printf(\"*\");\r\n            password[i]=ch;\r\n            i++;\r\n     }\r\n     printf(\"\\n Password is : %s\",password);\r\n}<\/pre>\n<h3>Program 3<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">#include&lt;stdio.h&gt;\r\n#include&lt;conio.h&gt;\r\n#define clrscr() system(\"cls\")\r\nint main()\r\n{\r\n    char ch;\r\n    clrscr();\r\n    printf(\"Enter a character : \");\r\n    ch=getche();\r\n    printf(\" %c :   %d \",ch,ch);\r\n    return 0;   \r\n}<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Program 1 #include&lt;stdio.h&gt; #include&lt;conio.h&gt; #define clrscr() system(&#8220;cls&#8221;) int main() { clrscr(); char ch1,ch2,ch3,ch4; static int i=0; pin: printf(&#8220;\\nEnter pin(only 4 digit): &#8220;); ch1=getch(); printf(&#8220;*&#8221;); ch2=getch(); printf(&#8220;*&#8221;); ch3=getch(); printf(&#8220;*&#8221;); ch4=getch(); printf(&#8220;*&#8221;); if(ch1==&#8217;1&#8242; &amp;&amp; ch2==&#8217;2&#8242; &amp;&amp;&#46;&#46;&#46;<\/p>\n","protected":false},"author":581,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19488],"tags":[23914,29589,34253,28585,29219,29218,34252,34251,31932],"class_list":["post-145138","post","type-post","status-publish","format-standard","hentry","category-c-programming","tag-c-programming","tag-c-project","tag-c-project-create-a-login-application","tag-c-tutorial","tag-c-practical","tag-c-program","tag-create-a-login-application-using-c","tag-how-to-create-login-application-using-c","tag-login-application"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>C Project - How to Create Login Page - DataFlair<\/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:\/\/data-flair.training\/blogs\/how-to-create-login-application-using-c\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C Project - How to Create Login Page - DataFlair\" \/>\n<meta property=\"og:description\" content=\"Program 1 #include&lt;stdio.h&gt; #include&lt;conio.h&gt; #define clrscr() system(&quot;cls&quot;) int main() { clrscr(); char ch1,ch2,ch3,ch4; static int i=0; pin: printf(&quot;nEnter pin(only 4 digit): &quot;); ch1=getch(); printf(&quot;*&quot;); ch2=getch(); printf(&quot;*&quot;); ch3=getch(); printf(&quot;*&quot;); ch4=getch(); printf(&quot;*&quot;); if(ch1==&#039;1&#039; &amp;&amp; ch2==&#039;2&#039; &amp;&amp;&#046;&#046;&#046;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/data-flair.training\/blogs\/how-to-create-login-application-using-c\/\" \/>\n<meta property=\"og:site_name\" content=\"DataFlair\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/DataFlairWS\/\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-26T09:34:46+00:00\" \/>\n<meta name=\"author\" content=\"DataFlair Team\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@DataFlairWS\" \/>\n<meta name=\"twitter:site\" content=\"@DataFlairWS\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"DataFlair Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"C Project - How to Create Login Page - DataFlair","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/data-flair.training\/blogs\/how-to-create-login-application-using-c\/","og_locale":"en_US","og_type":"article","og_title":"C Project - How to Create Login Page - DataFlair","og_description":"Program 1 #include&lt;stdio.h&gt; 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