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C program to replace the first occurrence of a character in the entered string using a while a loop.




C program to replace the first occurrence of a character in the entered string using a while a loop.



#include <stdio.h>

#define MAX 100
void replaceF(char * text, char oldC, char newC);


int main()
{
    char text[MAX], oldC, newC;

    printf("\n Enter any string: ");
    gets(text);

    printf("\n Enter character to replace in the given string: ");
     oldC = getchar();

    getchar();

    printf("Enter character to replace in the given string '%c' with: ", oldC);
     newC = getchar();

    printf("\n String before replacing: %s", text);

    replaceF(text, oldC, newC);

    printf("\n String after replacing the first occurring character '%c' with '%c' : %s", oldC, newC, text);

    return 0;
}


void replaceF(char * text, char oldC, char newC)
{
    int i=0;


    while(text[i] != '\0')
    {

        if(text[i] == oldC)
        {
            text[i] = newC;
            break;
        }

        i++;
    }
}
Output:
 Enter any string: G Rama
Enter character to replace: G
Enter character to replace 'G' with C
String before replacing: G Rama
String after replacing first 'G' with 'C': C Rama


Exercise: 1
C program to replace first occurrence of a character in a string.





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