convert to lowercase in c
/* Use the tolower Function to Convert String to Lowercase in C */ #include <stdlib.h> #include <stdio.h> #include <string.h> #include <ctype.h> int main(){ char *str = "THIS STRING LITERAL IS ARBITRARY"; printf("%s\n", str); for (size_t i = 0; i < strlen(str); ++i) { printf("%c", tolower((unsigned char) str[i])); } printf("\n"); exit(EXIT_SUCCESS); }
convert string to uppercase in c
For those of you who want to uppercase a string and store it in a variable (that was what I was looking for when I read these answers). #include <stdio.h> //<-- You need this to use printf. #include <string.h> //<-- You need this to use string and strlen() function. #include <ctype.h> //<-- You need this to use toupper() function. int main(void) { string s = "I want to cast this"; //<-- Or you can ask to the user for a string. unsigned long int s_len = strlen(s); //<-- getting the length of 's'. //Defining an array of the same length as 's' to, temporarily, store the case change. char s_up[s_len]; // Iterate over the source string (i.e. s) and cast the case changing. for (int a = 0; a < s_len; a++) { // Storing the change: Use the temp array while casting to uppercase. s_up[a] = toupper(s[a]); } // Assign the new array to your first variable name if you want to use the same as at the beginning s = s_up; printf("%s \n", s_up); //<-- If you want to see the change made. } //If you want to lowercase a string instead, change toupper(s[a]) to tolower(s[a]).
in c, is class uppercase or lowercase
class /*class name here*/ { /* inser all the things you do in a class here because you can and that is what you do*/ }
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