A not considered as vowel

[mmsergi]

Hi all,
I'm running a program that replaces all the vowels of a given sentence to another given vowel. The issue is that it works for all the vowels except when it has to replace the vowel "A".

The program is

#include<stdio.h>
int main(void){
	char sentence[200], vowel[6]="aeiou", changeVowel;
	int i, j;
	printf("Introduce a sentence (max 200 characters)\n");
	scanf("%[^\n]s", sentence);
	printf("Introduce a vowel\n");
	scanf("%s", &changeVowel);
	for(i=0; sentence[i]!='\0'; i++){
		for(j=0; j<6; j++){
			if(sentence[i]==vowel[j]){
				sentence[i]=changeVowel;
			}
		
		}
		
	}
	printf("%s\n", sentence);
	return 0;
}

As you can see,the A is not switched:


Do you know what is going on?

Thanks!

Sergi

[userxbw]

 scanf(" %c", &changeVowel);

try that and be sure you put that space in there too.

[GReaper]

Uppercase 'A' is different than lowercase 'a'. In order to account for both, you need to use the standard function tolower(), that converts all uppercase into lowercase letters.
tolower - C++ Reference

[mmsergi]

That works.
Thank you so much!!

[christop]

The %s format specifier expects a string, but changeVowel is a single char:

scanf("%s", &changeVowel);

That seems to overwrite the first character in the vowel string with a null terminator.

Use " %c" (with the leading space) for the format specifier.