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//To count the number of words in a string

#include<stdio.h>

#include<conio.h>

char words(char);

void main()

{

char string[100];

clrscr();

printf("Enter the string to reverse");

gets(string);

words(string);

getch();

}

char words(char string[] )

{

int count=0;

int i;

for(i=0;i<string[i]!='\0'; i++)

{

if(string[i]==' '&& string[i+1]!=' ')

count++;

}

printf("The number of words in a sentence is %d" , count+1);

}

// to reverse a given string

#include<stdio.h>

#include<conio.h>

char reverse(char);

void main()

{

char str1[100];

printf("Enter a string\n ");

gets(str1);

reverse(str1);

getch();

}

char reverse (char str1[])

{

int i=0, len=0;

while(str1[i]!='\0')

{

len++;

i++;

}

printf("\n The string in reverse is\n");

for(i=len-1; i>=0; i--)

{

printf("%c", str1[i]);

}

}