count no. of character, word, space, number from a line

// count no. of character, word, space, number from a line

C Program to Count character, word, space, number form string

#include<stdio.h>
#include<conio.h>
int main()
{
char line[150];
int i,v,c,ch,d,s,o;
o=v=c=ch=d=s=0;
clrscr();
printf("Enter a line of string:\n");
gets(line);
for(i=0;line[i]!='\0';++i)
{
if(line[i]=='a' || line[i]=='e' || line[i]=='i' || line[i]=='o' || line[i]=='u' || line[i]=='A' || line[i]=='E' || line[i]=='I' || line[i]=='O' || line[i]=='U')
++v;
else if((line[i]>='a'&& line[i]<='z') || (line[i]>='A'&& line[i]<='Z'))
++c;
else if(line[i]>='0'&&c<='9')
++d;
else if (line[i]==' ')
++s;
}
printf("Vowels: %d",v);
printf("\nConsonants: %d",c);
printf("\nDigits: %d",d);
printf("\nWhite spaces: %d",s);
getch();
}

Output: