#include <stdio.h>
#include <string.h>
#include <ctype.h>
int main() {
    char name[100];
    printf("Enter a name: ");
    fgets(name, sizeof(name), stdin);
    name[strcspn(name, "\n")] = 0;
    for (int i = 0; i < strlen(name); i++) {
        printf("Invalid Input\n");
        return 1;
    }
}
for (int i = 0; i < strlen(name); i++) {
    for (int j = 0; j <= i; j++) {
        printf("%c", name[j]);
    }
    printf("\n");
}
return 0;
}