In this program, you will take string input from user and finding all occurrence of uppercase, lowercase, digit and special character from a given string.
#include<stdio.h>
int main()
{
char a[30];
int u=0,l=0,s=0,d=0,i;
printf("\nenter the string:");
gets(a);
for(i=0;a[i]!='\0';i++)
{
if(a[i]>='A' && a[i]<='Z')
u++;
else if(a[i]>='a' && a[i]<='z')
l++;
else if(a[i]>='1' && a[i]<='9')
d++;
else{
s++; }
}
printf("\nuppercase:%d",u);
printf("\nlowercase:%d",l);
printf("\ndigit:%d",d);
printf("\nspecial character:%d",s);
return 0;
}enter the string:WeL@@come12 uppercase:2 lowercase:5 digit:2 special character:2