C Program to Search occurrence of Character in String

Search whether character is present in the string or not :

Logic [ Algorithm ]:

Accept the String from the user.
Also Accept the character to be searched
String is stored as array of character , then scan each array element with entered character.
If it matches then increment the Counter by 1 else go for another character.

#include<stdio.h>
#include<conio.h>

int main() {
   char str[20], ch;
   int count = 0, i;

   printf("\nEnter a string : ");
   scanf("%s", &str);

   printf("\nEnter the character to be searched : ");
   scanf("%c", &ch);

   for (i = 0; str[i] != '\0'; i++) {
      if (str[i] == ch)
         count++;
   }

   if (count == 0)
      printf("\nCharacter '%c'is not present", ch);
   else
      printf("\nOccurence of character '%c' : %d", ch, count);

   return (0);
}

#include<stdio.h>

#include<conio.h>

int main() {

char str[20], ch;

int count = 0, i;

printf("\nEnter a string : ");

scanf("%s", &str);

printf("\nEnter the character to be searched : ");

scanf("%c", &ch);

for (i = 0; str[i] != '\0'; i++) {

if (str[i] == ch)

count++;

}

if (count == 0)

printf("\nCharacter '%c'is not present", ch);

else

printf("\nOccurence of character '%c' : %d", ch, count);

return (0);

}

Output :

<strong>First Run :</strong>
Enter a string : c4learn.blogspot.com
Enter the character to be searched : o
Occurence of character 'o' : 3

<strong>Second Run :</strong>
Enter a string : c4learn.blogspot.com
Enter the character to be searched : x
Character 'x'is not present

<strong>First Run :</strong>

Enter a string : c4learn.blogspot.com

Enter the character to be searched : o

Occurence of character 'o' : 3

<strong>Second Run :</strong>

Enter a string : c4learn.blogspot.com

Enter the character to be searched : x

Character 'x'is not present

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C Program to Search occurrence of Character in String