include

int main() { int n; scanf("%d",&n); if (n==1) { printf("one"); } else if (n==2) { printf("two"); } else if (n==3) { printf("three"); } else if (n==4) { printf("four"); } else if (n==5) { printf("five"); } else if (n==6) { printf("six"); } else if (n==7) { printf("seven"); } else if (n==8) { printf("eight"); } else if (n==9) { printf("nine"); } else { printf("Greater than 9"); }

return 0;

}

Here is conditional statements in c problem solution - https://programmingoneonone.com/hackerrank-conditional-statements-in-c-solution.html

include

include

include

include

include

include

include

include

include

char* readline();

int main() { char* n_endptr; char* n_str = readline(); int n = strtol(n_str, &n_endptr, 10);

if (n_endptr == n_str || *n_endptr != '\0') { exit(EXIT_FAILURE); }

if (1<= n && n<=9){
    if (n==1){
        printf("one");
    }
    else if (n==2){
        printf("two");
    }
    else if (n==3){
        printf("three");
    }
    else if (n==4){
        printf("four");
    }
    else if (n==5){
        printf("five");
    }
    else if (n==6){
        printf("six");
    }
    else if (n==7){
        printf("seven");
    }
    else if (n==8){
        printf("eight");
    }
    else if (n==9){
        printf("nine");
    }

}
else if (n>9){
    printf("Greater than 9");
}

return 0;

}

char* readline() { size_t alloc_length = 1024; size_t data_length = 0; char* data = malloc(alloc_length);

while (true) {
    char* cursor = data + data_length;
    char* line = fgets(cursor, alloc_length - data_length, stdin);

    if (!line) { break; }

    data_length += strlen(cursor);

    if (data_length < alloc_length - 1 || data[data_length - 1] == '\n') { break; }

    size_t new_length = alloc_length << 1;
    data = realloc(data, new_length);

    if (!data) { break; }

    alloc_length = new_length;
}

if (data[data_length - 1] == '\n') {
    data[data_length - 1] = '\0';
}

data = realloc(data, data_length);

return data;

}