#include <stdio.h>
int main()
{
char ch[10];
printf("input 10 letters:");
for (int i = 0; i <= 9; i++)
{
ch[i] = getchar();
}
printf("your input letter:");
for (int i = 0; i <= 9;i++)
{
printf("%c", ch[i]);
}
printf("\nyour input letters'Caps are:");
for (int i = 0; i <= 9; i++)
{
if (ch[i] >= 'a' && ch[i] <= 'z')
{
ch[i] -= 32;
putchar(ch[i]);
}
else if(ch[i] >= 'A' && ch[i] <= 'Z')
{
putchar(ch[i]);
}
else
{
printf("your input text is not a letter!\n");
}
}
return 0;
}