Multiplication of 2 numbers without using Asterisk(*):

C program to count number of letters(Total and individually) in the given string:


#include <stdio.h>

int main()
{
    char str[100];
    int i,j,cnt,t=0;
   
   
    printf("enter string:");
    gets(str);
   
    printf("\nentered string is:");
    puts(str);
   
    printf("the number of letters  individually in the given string:\n");
   
    for(i=0;str[i];i++)
   
     {
       cnt=1;
       for(j=i+1;str[j];j++)
         {
            if(str[i]==str[j] && str[i]!=' ')
            {
              cnt++;
              str[j]='0';
            }
         }
     
     
        if(cnt >=1 && str[i] != '0' && str[i]!=' ')
         {
            printf("%c=%d\n", str[i],cnt);
            t=t+cnt;
         }

      }  
  
     printf("total number of letters in the given string is %d",t);
     return 0;
}