#include <stdio.h>
#include <string.h>
#include <stdlib.h>
char *insert_space(char *s) {
int len = strlen(s), j = 0;
char *tmp = (char *)malloc(((len * 2) * sizeof(char)) + 1);
for (int i = 0; i < len; i++) {
if (s[i] >= 'A' && s[i] <= 'Z' && i != 0) {
tmp[j++] = ' ';
}
tmp[j++] = s[i];
}
tmp[j] = '\0';
return tmp;
}
int main() {
char s[] = "PythonJavaPascalC#C++F#";
char *p = insert_space(s);
puts(p);
free(p);
}
/*
Python Java Pascal C# C++ F#
*/