Write a C Program to replace one character with another character in given string

Replace Character in a String - C Program Example

A C program to replace one character with another character in a given string involves iterating through the characters in the string, copying each character to a new string while replacing the specified character with the new character, and then displaying the resulting string

C Program to replace one character with another character in given string

#include
int main()
{
    char s[10],ch,ch1;
    int i;
    printf("Enter the string:");
    scanf("%s",s);
    printf("Enter the 1st Charcater to replace:");
    scanf(" %c",&ch);
    printf("Enter the 2nd Charcater to feed with replaced character:");
    scanf(" %c",&ch1);
    printf("Before Replaced  the string is:%s\n",s);
    for(i=0;s[i];i++)
        if(s[i]==ch)
        s[i]=ch1;
    printf("After the string:%s\n",s);
}

Output:

Enter the string: ELECTRO
Enter the 1st Charcater to Replace : E
Enter the 2nd Charcater to feed with replaced character: R
Before replace the string is: ELECTRO
After the string: RLRCTRO

C Program to Replace Character in a Given String

C Programming

#include 
#include 

int main() {
  char str[100];
  char old_char, new_char;

  printf("Enter the string: ");
  scanf("%s", str);

  printf("Enter the character to be replaced: ");
  scanf("%c", &old_char);

  printf("Enter the replacement character: ");
  scanf("%c", &new_char);

  // Replace all occurrences of old_char with new_char
  for (int i = 0; i < strlen(str); i++) {
    if (str[i] == old_char) {
      str[i] = new_char;
    }
  }

  // Print the modified string
  printf("The modified string is: %s\n", str);

  return 0;
}

Example output:

Enter the string: Hello, World!
Enter the character to be replaced: l
Enter the replacement character: o

The modified string is: Heooo, Worod!