#include <stdio.h>
#include <ctype.h>
#define MAX 5
 
int comparacao(char s1[], char s2[], int n) {
    int contador = 0;
    for (int i = 0; i < n; i++) {
        if (tolower(s1[i]) == tolower(s2[i])) contador++;
        else break;
    }
    return contador == n;
}
 
int main() {
    char s1_m[MAX] = {'a', 'b', 'c', 'd', 'e'}, s2_m[MAX] = {'a', 'b', 'c', 'D', 'E'};
    int n_m;
    printf("quantos caracteres serao verificados(max 5)\n> "); scanf("%d", &n_m);
    printf("os %d primeiros caracteres dos dois vetores %ssao iguais", n_m, comparacao(s1_m, s2_m, n_m) ? "" : "nao ");
}
 
//https://pt.stackoverflow.com/q/139712/101

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

NQo=

5