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  1. #include <ctype.h>
  2. #include <stdio.h>
  3.  
  4. void str_toupper(char  str[])
  5. {
  6.   unsigned  i = 0;
  7.   while (str[i]){
  8.     str[i] = toupper(str[i]);
  9.     i++;
  10.   }
  11. }
  12. int  main(void)
  13. {
  14.   char  str[100];
  15.  
  16.   printf("文字列を入力してください：");
  17.   scanf("%s", str);
  18.  
  19.   str_toupper(str);
  20.   printf("大文字：%s\n", str);
  21.  
  22.  
  23.   return (0);
  24. }
  25.  
Success #stdin #stdout 0.01s 2728KB
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Standard input is empty
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文字列を入力してください：大文字：
https://ideone.com/uDssA
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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