Finding the last occurrence of a character in a string

[scarlet sable]

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[solemn plinth]

seems to be alright

[civic nacelle]

start from the end and do reverse iteration

[eager prism]

was going to say, the printing seems fine, but the logic could probably use some work

;compile -fanalyzer```c
#include <stdio.h>
#include <stddef.h>
struct qstr {
size_t length;
size_t capacity;
char* data;
};
void qstr_rmlast (struct qstr* s, char c) {
int index = -1;
for (int i = 0; i < s->length; i++) {
if (s->data[i] == c) index = i;
}
printf("%d\n", index);
}
int main () {
struct qstr s = {5, 5, "hello"};
qstr_rmlast(&s, 'l');
}

[zenith moon]

Program Output

3

mage7717 | 47ms | c | x86-64 gcc 14.2 | godbolt.org

[eager prism]

works fine either way