101. Split a String Using Delimiter

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Code

#include <stdio.h>
#include <stdint.h>

void split_string(const char *str, char delimiter, char tokens[10][20], uint8_t *count) {
    // Go through every char in string 
    // If current index char is delimiter
    // Loop from current read char to new index char & add new letters to new_word
    // Add new word to token

    int cur_index = 0;
    int read_index = 0;
    
    //Go through every letter of string
    while(str[cur_index]!='\0'){
        //If the letter is the delimiter
        if(str[cur_index] == delimiter){
            for(int i=0;i<cur_index-read_index;i++){
                //Add each character between read counter -> delimiter char into token array
                tokens[(*count)][i] = str[read_index+i];   
            }
            read_index = cur_index+1; //Catch up read index
            (*count)++; //Increment words read counter
            
        }
        cur_index++;
    }

    //Do again for last token / Only token without delimiter
    for(int i=0;i<cur_index-read_index;i++){
        tokens[(*count)][i] = str[read_index+i];  
    }
    (*count)++;

}

int main() {
    char str[101];
    char delimiter;
    fgets(str, sizeof(str), stdin);
    scanf(" %c", &delimiter);

    // Remove newline
    uint8_t i = 0;
    while (str[i]) {
        if (str[i] == '\n') { str[i] = '\0'; break; }
        i++;
    }

    char tokens[10][20];
    uint8_t count = 0;

    split_string(str, delimiter, tokens, &count);

    for (uint8_t i = 0; i < count; i++) {
        printf("%s\n", tokens[i]);
    }

    return 0;
}

Solving Approach

 

 

 

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