16)Write a C program to accept string from the user & replace all occurrences of character ‘a’ by ‘*’ symbol.
#include <stdio.h>
#define MAX_SIZE 100 // Maximum string size
/* Function declaration */
void replaceAll(char * str, char oldChar, char newChar);
int main()
{
char str[MAX_SIZE], oldChar, newChar;
printf("Enter any string: ");
gets(str);
printf("Enter character to replace: ");
oldChar = getchar();
// Dummy getchar() to eliminate extra ENTER character
getchar();
printf("Enter character to replace '%c' with: ", oldChar);
newChar = getchar();
printf("\nString before replacing: \n%s", str);
replaceAll(str, oldChar, newChar);
printf("\n\nString after replacing '%c' with '%c' : \n%s", oldChar, newChar, str);
return 0;
}
/**
* Replace all occurrence of a character in given string.
*/
void replaceAll(char * str, char oldChar, char newChar)
{
int i = 0;
/* Run till end of string */
while(str[i] != '\0')
{
/* If occurrence of character is found */
if(str[i] == oldChar)
{
str[i] = newChar;
}
i++;
}
}
Output:
/
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