C program to count the words:

void CountWords();

         void main()

         {

            printf("\n\tcount the words and enter string\n\n\n");

            CountWords();

         }

        void CountWords()

        {

            char c;

            int num=0;

            int flag= 0;

             while((c=getchar())!='\n')

            {

                                                if((c==' ')||(c=='               ')||(c=='.')||(c==';')||(c==',')||(c==';')

                                                                ||(c==':')||(c=='"')||(c=='?')||(c=='!')||(c=='-'))

              {

                flag=0 ;       

              }                         

              else if(flag==0)

              {

                num++;

                flag=1;    

              }

           }

              printf("\t\n\n\nNumber of words is %d\n",num);

         }