![\"\"](\"https:\/\/blue.pri.ee\/ttu\/wp-content\/uploads\/2018\/09\/tab4.png\")
<\/a><\/p>\nThe solution is becoming quite impressive already, however there are still a few issues. One of which is changing the length of the field. Currently we need to do it in two places, however it would be preferred to do it in only one place, when needed. Let’s take a look at achieving this.<\/p>\n
#include <stdio.h>\r\n\r\n#define F_LEN_NAME 13\r\n#define F_LEN_AGE 3\r\n#define F_LEN_ID 6\r\n#define F_LEN_WAGE 5\r\n\r\nint main(void)\r\n{\r\n char *names[] = {\"Ott\", \"Dolores\", \"Johanna-Maria\"};\r\n int employeeNum[] = {7, 19, 2123};\r\n int ages[] = {22, 19, 53};\r\n float wages[] = {13f, 8.95f, 10.1f};\r\n\r\n printf(\"%-*s %*s %*s %*s\\n\", F_LEN_NAME, \"name\",\r\n F_LEN_AGE, \"age\",\r\n F_LEN_ID, \"id #\",\r\n F_LEN_WAGE, \"wage\");\r\n for (int i = 0; i < 3; i++)\r\n {\r\n printf(\"%-*s %*d %0*d %*.2f\\n\", F_LEN_NAME, names[i],\r\n F_LEN_AGE, ages[i],\r\n F_LEN_ID, employeeNum[i],\r\n F_LEN_WAGE, wages[i]);\r\n }\r\n return 0;\r\n}\r\n<\/pre>\nThe length of the field can be given using a variable or a constant instead of just writing it into the format. To do this, we will write an asterksk (*) instead of the actual number. In this case, the length of the field will be taken from the arguments of that printf statement. First value in this case needs to be the length, given as #define constants, and the second value is from the actual variable. Now all we need to do is change the constant and it will be easy to modify the table column widths.<\/p>\n
The next step in this would be making these columns either dynamically changing in widths or just cutting off the excess if a value is too long. To achieve the first, we would need to replace the constants with variables and we would need to scan the entire column for the longest value. The second option would force us to print characters, one at a time, until we run out of room.\u00a0 Which is better out of all the given ideas and solutions depends on the task at hand.<\/p>\n
I’d also like to point out, that due to the line length limit, we’re splitting this line to make it pleasing to the eye and of course easier to fix if we miss something. Information about this can be found in the coding style.<\/p>\n","protected":false},"excerpt":{"rendered":"
The following page will list various tips and tricks on using the printf() function. I recommend copying those examples and trying them out for yourself. I also encourage You to try modify some lines or values and see what happens. Every code example has some accompanying text, explaining what the good and bad sides of … Loe edasi Using printf with tips and tricks<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":4802,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"page-templates\/code-width-wide.php","meta":{"footnotes":""},"class_list":["post-3992","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blue.pri.ee\/ttu\/wp-json\/wp\/v2\/pages\/3992","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blue.pri.ee\/ttu\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blue.pri.ee\/ttu\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blue.pri.ee\/ttu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blue.pri.ee\/ttu\/wp-json\/wp\/v2\/comments?post=3992"}],"version-history":[{"count":2,"href":"https:\/\/blue.pri.ee\/ttu\/wp-json\/wp\/v2\/pages\/3992\/revisions"}],"predecessor-version":[{"id":10257,"href":"https:\/\/blue.pri.ee\/ttu\/wp-json\/wp\/v2\/pages\/3992\/revisions\/10257"}],"up":[{"embeddable":true,"href":"https:\/\/blue.pri.ee\/ttu\/wp-json\/wp\/v2\/pages\/4802"}],"wp:attachment":[{"href":"https:\/\/blue.pri.ee\/ttu\/wp-json\/wp\/v2\/media?parent=3992"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}