Convert string to upper case and lower case : String Case « String « C / ANSI-C

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C / ANSI-C » String » String CaseScreenshots 
Convert string to upper case and lower case

  
#include <ctype.h>
#include <stdio.h>

int main(void)
{

  char str[80];
  int i;

  printf("Enter a string: ");
  gets(str);

  fori = 0; str]; i++)
    str= toupperstr] );

  printf("%s\n", str)/* uppercase string */

  for(i = 0; str]; i++)
    str[i= tolower(str]);

  printf("%s\n", str)/* lowercase string */

  return 0;
}


           
       
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