Question

[ Write in C, not C++]

Define a function char* deleteSymbol(char *s, char x) that removes the
character x from string s. For s[] = “America”, a call to deleteSymbol(s, ‘a’)
converts s[] = “Ame”

Answer 1

The fully commented program is:

#include<stdio.h>


//function to delete the symbol from the string
char* deleteSymbol(char*s, char x){

    //iterate the character array s
    for(int i = 0; s[i] != '\0'; ++i){

        //if the current character is x
        if(s[i] == x){   
            int j;
          
            //shift the string to left by 1 place
            for(j = i; s[j] != '\0'; ++j){
                s[j] = s[j + 1];
            }

            s[j] = '\0';
            i--;
        }
    }
    return s;
}


int main(){
    
    //string to be manipulated
    char s[1000];  
    
    //character to remove
    char x;    

    // read the input string
    printf("Enter the string to manipulate\n");
    fgets(s, sizeof(s), stdin);

    //read the character to be removed from the string
    printf("Enter the character to remove from the string\n");
    scanf("%c", &x);

    //calling deleteSymbol function to delete symbol from string
    deleteSymbol(s, x);

    //printing the string after removal of symbol
    printf("The string after removal of %c is %s", x, s);
    return 0;
}

Output is:

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