Question

Write a program that asks the user for a sentence and displays the following four things. They are in increasing order of difficulty.

1. How many characters in that sentence? [12]

2. How many words in that sentence? [3]

3. The sentence backwards [dooG sI efiL]

4. The words (not the letters) shown in reverse order (not mandatory! this one is hard!!) [Good Is Life]

Answer 1

#include<stdio.h>

int main(){

   int i,j;

   char str[]="Life Is Good";

   printf("Length of sentence : %d\n",strlen(str));

   int words=1;

   int indices[10];

   char strrev[sizeof(str)];

   char strwordsrev[sizeof(str)];

   int k;

   k=0;

   for(i=0;i<strlen(str);i++){

      if(str[i]==' '){

         words=words+1;

         indices[k]=i;

         k=k+1;

      }

   }

   indices[words-1]=strlen(str);

   printf("Words in sentence: %d\n",words);

   for(i=strlen(str);i>=0;i--){

      strrev[strlen(str)-1-i]=str[i];

   }

   printf("Sentence in reverse: ");

   for(i=0;i<strlen(strrev);i++){

      printf("%c",strrev[i]);

   }

   printf("\nWords in reverse: ");

   int temp=0;

   for(i=0;i<words;i++){

      j=0;

      while(1){

         printf("%c",strrev[indices[i]-j]);

         j=j+1;

         if((indices[i]-j)==temp-1){

            temp=indices[i];

            break;

         }

      }

   }

   

   

}