C :

#include<stdio.h>
#include<string.h>
int main(){		
	char s[1000];
	gets(s);
	int len=strlen(s),i,n=0;
	for(i=0;i<len;i++){
		if(s[i]>='A'&&s[i]<='Z'){
			n++;
		}
		
	}
	printf("%d",n);
	return 0; 
	}

Python :

# coding=utf-8
s = input()
n = 0
i = ord(s[n])
c = 0
while i != 46:
    if i >= 65 and i<= 90:
        c = c + 1
        n = n + 1
        i = ord(s[n])
         
    else:
        n = n + 1
        i = ord(s[n])
print(c)