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C Program to delete n characters in a given string
Problem
Write the user functions to Delete N – Characters from Position in a given string. Here, the string is given by the user at runtime.
Solution
The solution to delete n characters in a given string is as follows −
Algorithm
Refer an algorithm to delete n characters in a given string.
Step 1 − Start
Step 2 − Read string at runtime
Step 3 − Read position from where we need to delete the characters
Step 4 − Read n, number of characters to delete from that position
Step 5 − Call the function deletestr(str,p,n) jump to step 7
Step 6 − Stop
Step 7 − Called function deletestr(str,p,n)
1. for i =0 , j = 0 to Length[str] 2. do if i = p-1 3. i = i + n 4. str[j] =str[i] 5. str[j] = NULL 6. print str
Example
Following is the C program to delete n characters in a given string −
#include <stdio.h>
#include <conio.h>
// prototype of function
void del_str(char [],int, int);
main(){
int n,p;
char str[30];
printf("
Enter the String:");
gets(str);
fflush(stdin);
printf("
Enter the position from where the characters are to be deleted:");
scanf("%d",&p);
printf("
Enter Number of characters to be deleted:");
scanf("%d",&n);
del_str(str,p,n);
}
//function call
void del_str(char str[],int p, int n){
int i,j;
for(i=0,j=0;str[i]!='\0';i++,j++){
if(i==(p-1)){
i=i+n;
}
str[j]=str[i];
}
str[j]='\0';
puts(" The string after deletion of characters:");
puts(str);
}Output
When the above program is executed, it produces the following result −
Enter the String:Tutorials Point C programming Enter the position from where the characters are to be deleted:10 Enter Number of characters to be deleted:6 The string after deletion of characters: Tutorials C programming
Updated on: 31-Aug-2021
3K+ Views
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