#include <stdio.h>
int main(void) {
char str1[10];
for(int i=0;str1[i]!='\0';i++)
{
if (str1[i]>=65 && str1[i]<=90){
str1[i]=str1[i]+32;
}
else{
str1[i]=str1[i];
}
}
return 0;
}
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