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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
void show_filtre(char *s){
for (int i = 0; s[i] != '\0'; i++) {
if (s[i] >= 'A' && s[i] <= 'z') printf("%c", s[i]);
}
}
char *filtre(char *s) {
char *ns = malloc(sizeof(char) * strlen(s));
int j = 0;
for (int i = 0; s[i] != '\0'; i++){
if (s[i] >= 'A' && s[i] <= 'z') ns[j++] = s[i];
}
return ns;
}
int main() {
char *s = "Hello World! What's up guys?";
show_filtre(s);
printf("\n%s\n", filtre(s));
return 0;
}
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