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How to capitalize the first and last letter of each word in char array with C

1 Answer

0 votes
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

void capitalize_first_last(char *arr, int len) {
    int *idx = (int *)malloc(len * sizeof(int));
    idx[0] = 1; 
    idx[len - 1] = 1;
      
    for (int i = 1; i < len; i++){
        if (arr[i] == ' ') {
			idx[i - 1] = 1; 
			idx[i + 1] = 1; 
        }
    }
    for (int i = 0; i < len; i++) {
        if (idx[i] == 1)
			arr[i] -= 32;
	}
	free(idx);
}
  
int main() {
    char arr[] = "abcd efgh ijkl";
  
    capitalize_first_last(arr, strlen(arr));
      
    printf("%s\n", arr);
      
    return 0;
}
  
  
  
/*
run:
  
AbcD EfgH IjkL
  
*/

 




answered 6 days ago by avibootz
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