#include <stdio.h>
#include <string.h>
#define MAX_SIZE 100
int main() {
char str1[MAX_SIZE];
char str2[MAX_SIZE];
// Read the entire line including spaces
scanf(" %[^\n]", str1);
scanf(" %[^\n]", str2);
int len = strlen(str1);
int len2 = strlen(str2);
int word_index[MAX_SIZE];
word_index[0] = 0;
int index = 1;
// Find the start indices of each word in str1
for (int i = 0; i < len; i++) {
if (str1[i] == ' ') {
word_index[index] = i + 1;
index++;
}
}
int occurance_arr[MAX_SIZE];
int occurance_index = 0;
// Search for the occurrences of str2 as a whole word in str1
for (int i = 0; i < index; i++) {
int start = word_index[i];
int k = 0;
int word_end = 0;
int flag = 0;
for (int j = start; j < start + len2; j++) {
if (str1[j] != str2[k]) {
flag = 1; // Characters do not match
break;
}
k++;
if (k == len2) {
if (str1[j + 1] == ' ' || str1[j + 1] == '\0') {
word_end = 1; // Match found as a whole word
}
}
}
if (flag == 0 && word_end == 1) {
occurance_arr[occurance_index] = start;
occurance_index++;
}
}
// Print the result
if (occurance_index == 0) {
printf("Word Not Found");
} else {
// Removal of First Occurrence
printf("\nRemoval of First Occurrence:\n");
for (int i = 0; i < len; i++) {
if (i == occurance_arr[0]) {
i += len2; // Skip the length of the word found
if (str1[i] == ' ') {
i++; // Skip the space after the word
}
}
printf("%c", str1[i]);
}
// Removal of Last Occurrence
printf("\nRemoval of Last Occurrence:\n");
for (int i = 0; i < len; i++) {
if (i == occurance_arr[occurance_index - 1]) {
i += len2; // Skip the length of the word found
if (str1[i] == ' ') {
i++; // Skip the space after the word
}
}
printf("%c", str1[i]);
}
// Removal of All Occurrences
printf("\nRemoval of All Occurrences:\n");
for (int i = 0; i < len; i++) {
int is_match_start = 0;
for (int j = 0; j < occurance_index; j++) {
if (i == occurance_arr[j]) {
is_match_start = 1;
break;
}
}
if (is_match_start) {
i += len2; // Skip the length of the word found
if (str1[i] == ' ') {
i++; // Skip the space after the word
}
}
printf("%c", str1[i]);
}
}
return 0;
}
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OneCompiler's C online editor supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample C program which takes name as input and print your name with hello.
#include <stdio.h>
int main()
{
char name[50];
printf("Enter name:");
scanf("%s", name);
printf("Hello %s \n" , name );
return 0;
}
C language is one of the most popular general-purpose programming language developed by Dennis Ritchie at Bell laboratories for UNIX operating system. The initial release of C Language was in the year 1972. Most of the desktop operating systems are written in C Language.
When ever you want to perform a set of operations based on a condition if-else is used.
if(conditional-expression) {
// code
} else {
// code
}
You can also use if-else for nested Ifs and if-else-if ladder when multiple conditions are to be performed on a single variable.
Switch is an alternative to if-else-if ladder.
switch(conditional-expression) {
case value1:
// code
break; // optional
case value2:
// code
break; // optional
...
default:
// code to be executed when all the above cases are not matched;
}
For loop is used to iterate a set of statements based on a condition.
for(Initialization; Condition; Increment/decrement){
// code
}
While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.
while(condition) {
// code
}
Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.
do {
// code
} while (condition);
Array is a collection of similar data which is stored in continuous memory addresses. Array values can be fetched using index. Index starts from 0 to size-1.
data-type array-name[size];
data-type array-name[size][size];
Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity.
Two types of functions are present in C
Library functions are the in-built functions which are declared in header files like printf(),scanf(),puts(),gets() etc.,
User defined functions are the ones which are written by the programmer based on the requirement.
return_type function_name(parameters);
function_name (parameters)
return_type function_name(parameters) {
//code
}