c - Reading whole input instead of single line -

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• how use eof run through text file in c? 4 answers

i have written program changes lowercase letter uppercase. problem is, dont know how make read whole text instead of 1 line. program returns output after pressing enter , want so, after ctrl+z.

#include <stdlib.h> #include <stdio.h>   void makeupper(char *s) {     int i;     for(i = 0; s[i] != '\0'; i++){         s[i] = toupper(s[i]);     }     printf("%s", s); }   int main() {     char string[1000];      fgets(string, 1000, stdin);      makeupper(string);     return 0; } 

fgets() stop once encounters newline. so, can't workaround read multiple lines. so, you'll have @ alternatives.

one way is use getchar() loop , read long there's room in buffer or eof received.:

int main(void) {      char string[1000];     size_t = 0;      {         int ch = getchar();         if (ch == eof) break;         string[i] = ch;         i++;     } while (i < sizeof string - 1);     string[i] = 0;      makeupper(string);     return 0; } 

remember, ctrl+z works on windows (to send eof). on *nix-like systems, you'll have use ctrl+d send eof.