Count the numbers in a number

The program counts the numbers of a number. For example take the number 76453, the program counts the total numbers in that numbers and gives output as 5.

        void main()
            int num,count=0;
            printf("/n Enter a number:");
            for( ; num!=0; num=num/10)
            printf("/n Total number of digits are %d",count);
            return 0;