#include <stdio.h>
void myStrlen(char s[]){
int i;
for(i=0;s[i]!='\0';i++)
{
if(s[i]=='1'){
s[i]='I'; }
}
return ;
}
int main(void) {
int i;
char s[100];
myStrlen(s);
return 0;
}
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