{"id":10339,"date":"2022-07-12T08:30:12","date_gmt":"2022-07-12T08:30:12","guid":{"rendered":"http:\/\/fastbitlab.com\/?p=10339"},"modified":"2023-08-26T12:30:11","modified_gmt":"2023-08-26T07:00:11","slug":"microcontroller-embedded-c-programming-lecture-70-scanf-and-float-with-scientific-notation","status":"publish","type":"post","link":"https:\/\/fastbitlab.com\/blog\/microcontroller-embedded-c-programming-lecture-70-scanf-and-float-with-scientific-notation\/","title":{"rendered":"Microcontroller Embedded C Programming Lecture 70| Scanf and float with scientific notation"},"content":{"rendered":"
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Scanf and float with scientific notation<\/strong><\/span><\/h1>\n
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In this article, now let’s do one exercise. <\/span><\/p>\n

Exercise: <\/strong><\/span><\/p>\n

Find out the Number of electrons responsible for producing the given charge. Use scientific notation while inputting and outputting the numbers.<\/span><\/p>\n

The equation is, Number of electrons = given charge\/charge of an Electron<\/strong>.<\/span><\/span><\/p>\n

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First of all, let me create some variables. Let me use a data type <\/span>double<\/b> to take <\/span>Charge<\/b>. And after that, to take charge of an electron, let me create one more variable <\/span>chargeE<\/b>. Then, calculate the number of electrons. For that, let me create one more variable <\/span>double electrons<\/b>.<\/span><\/span><\/p>\n

\"Figure
Figure 1. Code<\/span><\/figcaption><\/figure>\n

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After that, let me use printf to give the message “Enter the charge,” and then, let’s scan the number. For that, I’m going to use <\/span>%lf<\/b> (for double, you have to use lf) and <\/span>&charge<\/b>. <\/span><\/span><\/p>\n

After that printf, let\u2019s ask the user to \u201cEnter the charge of an electron.\u201d And let me take this number in scientific notation. For that, I am going to use <\/span>scanf(“%le”,&chargeE)<\/b>;. The code is shown in Figure 1.<\/span><\/span><\/p>\n

 <\/p>\n

After that, let\u2019s calculate the number of electrons. <\/span><\/p>\n

electrons = (charge \/chargeE) * -1;<\/b><\/span><\/p>\n

The given charge is divided by the charge of a single electron, which would give you the negative result, so let me multiply by -1. <\/span><\/p>\n

And let’s print the result in scientific notation. The total number of electrons = %le\\n, and let’s print electrons here. And also, let me print in non-scientific notation. For that, let me use %lf. The code is shown in Figure 2.<\/span><\/p>\n

\"Scanf
Figure 2. Code<\/span><\/figcaption><\/figure>\n

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Now let’s see how this goes. Let’s compile this code and execute the binary as a command-line application.<\/span><\/p>\n

\"Scanf
Figure 3. Output<\/span><\/figcaption><\/figure>\n

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Here I  Enter the charge as 0.005 and Enter the charge of an electron as -1.602e-19. You can input the number in scientific notation, so let me input -1.602e-19.<\/span><\/p>\n

These are the outputs shown in Figure 3. The first output is in scientific notation, and the second output is in non-scientific notation.<\/span><\/p>\n

That’s about the usage of float and double data types in ‘C.’<\/span><\/p>\n

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FastBit Embedded Brain Academy Courses<\/b><\/span><\/p>\n

Click here: <\/span><\/span>https:\/\/fastbitlab.com\/course1<\/span><\/a><\/span><\/p>\n

 <\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

  Scanf and float with scientific notation     In this article, now let’s do one exercise. Exercise: Find out the Number of electrons responsible for producing the given charge. Use scientific notation while inputting and outputting the numbers. The equation is, Number of electrons = given charge\/charge of an Electron.   First of all, […]<\/p>\n","protected":false},"author":1,"featured_media":10342,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"off","ocean_gallery_id":[],"footnotes":""},"categories":[8],"tags":[16],"class_list":["post-10339","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-microcontroller-embedded-c-programming","entry","has-media"],"yoast_head":"\nScientific Notation with scanf and float in C Programming<\/title>\n<meta name=\"description\" content=\"Learn how to input and output numbers in scientific notation using scanf and float in C programming. 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