{"id":27217,"date":"2018-01-05T20:32:24","date_gmt":"2018-01-05T15:02:24","guid":{"rendered":"https:\/\/www.wikitechy.com\/technology\/?p=27217"},"modified":"2018-01-05T20:32:24","modified_gmt":"2018-01-05T15:02:24","slug":"c-program-to-change-case-of-a-string","status":"publish","type":"post","link":"https:\/\/www.wikitechy.com\/technology\/c-program-to-change-case-of-a-string\/","title":{"rendered":"C program to change case of a string"},"content":{"rendered":"

Strlwr function convert a string <\/a>to lower case and strupr function convert a string to upper case.Here we will change string case with and without strlwr, strupr functions. These functions convert case of alphabets and ignore other characters which may be present in a string.<\/p>\n

strlwr in c<\/h2>\n
<\/div> 
#include <stdio.h>#include <string.h> int main(){   char string[1000];    printf("Input a string to convert to lower case\\n");   gets(string);    printf("Input string in lower case: \\"%s\\"\\n",strlwr(string));    return  0;}<\/code><\/pre> <\/div>\n[ad type=”banner”]\n
strupr in c<\/h2>\n
 
 <\/div> 
#include <stdio.h>#include <string.h> int main(){   char string[1000];    printf("Input a string to convert to upper case\\n");   gets(string);    printf("Input string in upper case: \\"%s\\"\\n",strupr(string));    return  0;}<\/code><\/pre> <\/div>\n[ad type=”banner”]\n
Change string to upper case without strupr<\/h2>\n
 
 <\/div> 
#include <stdio.h> void upper_string(char []); int main(){   char string[100];    printf("Enter a string to convert it into upper case\\n");   gets(string);    upper_string(string);    printf("Entered string in upper case is \\"%s\\"\\n", string);    return 0;} void upper_string(char s[]) {   int c = 0;    while (s[c] != '\\0') {      if (s[c] >= 'a' && s[c] <= 'z') {         s[c] = s[c] - 32;      }      c++;   }}<\/code><\/pre> <\/div>\n
Change string to lower case without strlwr<\/h2>\n
 
 <\/div> 
#include <stdio.h> void lower_string(char []); int main(){   char string[100];    printf("Enter a string to convert it into lower case\\n");   gets(string);    lower_string(string);    printf("Entered string in lower case is \\"%s\\"\\n", string);    return 0;} void lower_string(char s[]) {   int c = 0;    while (s[c] != '\\0') {      if (s[c] >= 'A' && s[c] <= 'Z') {         s[c] = s[c] + 32;      }      c++;   }}<\/code><\/pre> <\/div>\n
You can also implement functions using pointers.<\/p>\n[ad type=”banner”]\n
C program to change case from upper to lower and lower to upper<\/h2>\n
Below program change case of alphabets if a lower case alphabet is found it is converted to upper and if an upper case is found it is converted to lower case.<\/p>\n
 
 <\/div> 
#include <stdio.h> int main () {   int c = 0;   char ch, s[1000];    printf("Input a string\\n");   gets(s);    while (s[c] != '\\0') {      ch = s[c];      if (ch >= 'A' && ch <= 'Z')         s[c] = s[c] + 32;      else if (ch >= 'a' && ch <= 'z')         s[c] = s[c] - 32;         c++;      }    printf("%s\\n", s);    return 0;}<\/code><\/pre> <\/div>\n
Output of program:<\/strong><\/p>\n
Input a string\r\nabcdefghijklmnopqrstuvwxyz{0123456789}ABCDEFGHIJKLMNOPQRSTUVWXYZ\r\nABCDEFGHIJKLMNOPQRSTUVWXYZ{0123456789}abcdefghijklmnopqrstuvwxyz<\/pre>\n
If a digit or special character is present in string.<\/p>\n","protected":false},"excerpt":{"rendered":"
C program to change case of a string – C Programming – Strlwr function convert a string to lower case and strupr function convert a string to upper case.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[69969,69866],"tags":[81136,81138,81139,81133,81135,81134,81140,81137],"class_list":["post-27217","post","type-post","status-publish","format-standard","hentry","category-algorithm","category-c-programming","tag-c-program-to-convert-lowercase-to-uppercase-and-vice-versa","tag-c-program-to-convert-uppercase-to-lowercase-by-using-file","tag-c-program-to-convert-uppercase-to-lowercase-and-vice-versa","tag-convert-lowercase-to-uppercase-in-c-without-library-function","tag-convert-string-to-lowercase-c-programming","tag-convert-string-to-uppercase-in-c","tag-convert-string-to-uppercase-in-c-without-toupper","tag-strupr-in-c"],"_links":{"self":[{"href":"https:\/\/www.wikitechy.com\/technology\/wp-json\/wp\/v2\/posts\/27217","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wikitechy.com\/technology\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wikitechy.com\/technology\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wikitechy.com\/technology\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wikitechy.com\/technology\/wp-json\/wp\/v2\/comments?post=27217"}],"version-history":[{"count":0,"href":"https:\/\/www.wikitechy.com\/technology\/wp-json\/wp\/v2\/posts\/27217\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.wikitechy.com\/technology\/wp-json\/wp\/v2\/media?parent=27217"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wikitechy.com\/technology\/wp-json\/wp\/v2\/categories?post=27217"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wikitechy.com\/technology\/wp-json\/wp\/v2\/tags?post=27217"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}