Write two functions, first() and last (), described as follows: . the function first () takes a strings and a character c as arguments and returns a pointer to the first occurrence of the character c in the string s. That is, if s = "A string to be searched" and c = 'e', then the function first() returns a character pointer to the 'e' in the word "be". If the character does not occur in the string s, then the value NULL is returned. • the function last () takes a string s and a character c as arguments and returns a pointer to the last occurrence of the character c in the string s. That is, if s = "A string to be searched" and c = 'e', then the function last () returns a character pointer to the 'e' just before the 'd' in the last word. Again, if the character does not occur in the string, then the NULL pointer is returned. Write a main program which defines a string, str, which contains the sentence "A string to be searched". Your program should then prompt the user for the character to search for, c. The functions first() and last () are then called with str and c as arguments and the resulting strings (starting at the returned pointers) are printed to an output file. For example, if you type in the letter 's' as the character to search for, your program should print out: Original string: A string to be searched First occurrence of 's' starts the string: string to be searched Last occurrence of 's' starts the string: searched Test your program using the characters 'r', 'e' and 'q'. Note that the last should give the error message: Character 'q' not found.
Write two functions, first() and last (), described as follows: . the function first () takes a strings and a character c as arguments and returns a pointer to the first occurrence of the character c in the string s. That is, if s = "A string to be searched" and c = 'e', then the function first() returns a character pointer to the 'e' in the word "be". If the character does not occur in the string s, then the value NULL is returned. • the function last () takes a string s and a character c as arguments and returns a pointer to the last occurrence of the character c in the string s. That is, if s = "A string to be searched" and c = 'e', then the function last () returns a character pointer to the 'e' just before the 'd' in the last word. Again, if the character does not occur in the string, then the NULL pointer is returned. Write a main program which defines a string, str, which contains the sentence "A string to be searched". Your program should then prompt the user for the character to search for, c. The functions first() and last () are then called with str and c as arguments and the resulting strings (starting at the returned pointers) are printed to an output file. For example, if you type in the letter 's' as the character to search for, your program should print out: Original string: A string to be searched First occurrence of 's' starts the string: string to be searched Last occurrence of 's' starts the string: searched Test your program using the characters 'r', 'e' and 'q'. Note that the last should give the error message: Character 'q' not found.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Plz use c programming to complete the coding and plz don't use libraries other than the one written
Transcribed Image Text:Write two functions, first() and last (), described as follows:
• the function first () takes a strings and a character c as arguments and returns a pointer
to the first occurrence of the character c in the string s. That is, if s = "A string to
be searched" and c = 'e', then the function first() returns a character pointer to
the 'e' in the word "be". If the character does not occur in the string s, then the value
NULL is returned.
• the function last () takes a string s and a character c as arguments and returns a pointer
to the last occurrence of the character c in the string s. That is, if s = "A string to
be searched" and c = 'e', then the function last() returns a character pointer to the
'e' just before the 'd' in the last word. Again, if the character does not occur in the
string, then the NULL pointer is returned.
Write a main program which defines a string, str, which contains the sentence “A string to be
searched". Your program should then prompt the user for the character to search for, c. The
functions first() and last () are then called with str and c as arguments and the resulting
strings (starting at the returned pointers) are printed to an output file. For example, if you
type in the letter 's' as the character to search for, your program should print out:
Original string :
A string to be searched
First occurrence of 's' starts the string:
string to be searched
Last occurrence of 's' starts the string :
searched
Test your program using the characters 'r', 'e' and 'q'. Note that the last should give the
error message: Character 'q' not found.
![#include<stdio.h>
char* first (char* s, char c);
int main(void) {
char* f
char* i;
}
f=first(s,c);
if (f==NULL) {
}else{
fprintf(fout, "%s", f);
}
return 0;
}
char first (char* s, char c) {
char* answer=NULL;
for (i-e;s[i]!= '\0';i++){
if(s[i]==c){
answer=&s[i];
break;
return answer;](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F88f9be6d-d8dd-4674-ab78-d1dd0cdba8bb%2Fbde044ff-a734-442f-a59f-c3471fdde644%2F1bwk5a_processed.jpeg&w=3840&q=75)
Transcribed Image Text:#include<stdio.h>
char* first (char* s, char c);
int main(void) {
char* f
char* i;
}
f=first(s,c);
if (f==NULL) {
}else{
fprintf(fout, "%s", f);
}
return 0;
}
char first (char* s, char c) {
char* answer=NULL;
for (i-e;s[i]!= '\0';i++){
if(s[i]==c){
answer=&s[i];
break;
return answer;
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