// editor4
#include <stdio.h>
#include <string.h>
#include<ctype.h>
int isValid(const char *name)
{
    if (strlen(name)== 0){
        return 0;
    }
    for (int i=0;name[i]!='\0';i++){
        if (!isalpha(name[i])&& !sspace(name[i])){
            return 0;
        }
    }
    return 1;
    
}
void printPyramid(const char *name){
    if(!isValid(name)){
        printf("Inavlid input\n");
        return ;
        
    }
    int len= strlen(name);
    for(int i=1;i<=len;i++){
        for (int j=0;j<i;j++){
            printf("%c",name[j]);
            
        }
        printf("\n");
    }
}
int main(){
    char name1[]="hello";
    printf("Sample Input 1:%s\n",name1);
    printf("Sample Output 1:\n");
    prntPyramid(name1);
    char name2[]="Annie";
    printf("\nSample Input 2:%s\n",name2);
    printf("Sample Outtut 2:\n");
    printPyramid(name2);
    char name3[]="John Doe";
    printf("\nSample Input 3:%s\n",name3);
     printf("Sample Outtut 3:\n");
    printPyramid(name3);
    char name4[]="hello123";
    printf("\nSample Input 4:%s\n",name4);
     printf("Sample Outtut 4:\n");
    printPyramid(name4);
    char name5[]= "";
    printf("\nSample Input 5:%s\n",name5);
     printf("Sample Outtut 5:\n");
    printPyramid(name5);
}