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#include <stdio.h> int main(void){ printf("Hello World\n"); return 0; }
gcc program.c -o program
#include <stdio.h> int main(void){ int port = 80; char ip = "192.168.0.1"; float timeout = 1.1; printf("IP: %s \n", ip); printf("Port: %i \n", port); printf("Timeout: %.1f \n", timeout); return 0; }
Código não recomendado pois não trata o tamanho do input do usuário:
#include <stdio.h> int main(void){ int port; char ip[16]; printf("IP:"); scanf("%s", &ip); printf("Port:"); scanf("%i", &port); printf("SOCK: %s:%i", ip, port); return 0; }
Código recomendado:
#include <stdio.h> int main(void){ int port; char ip[16]; printf("IP:"); fgets(ip, 16, stdin); printf("Port:"); fgets(port, 6, stdin); printf("SOCK: %s:%i", ip, port); return 0; }
Caractere nulo ao final da string deve ser levado em consideração.
#include <stdlib.h> int main(void){ system("netstat -nlpt"); return 0; }
#include <stdio.h> int main(int argc, char *argv[]){ if(argc < 2) { printf("Use: ./program <ip> <port>\n"); } else { printf("SOCK: %s:%i\n", argv[1], argv[2]); return 0; } }
#include <stdio.h> int main(int argc, char *argv[]){ int port; if(argc < 2) { printf("Use: ./program <ip>\n"); } else { for (port=1; i<=100; i++){ printf("SOCK: %s:%port\n", argv[1], port); } return 0; } }
gcc -save-temps desec.c -o desec
The text was updated successfully, but these errors were encountered:
raphaelsander
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Hello World
Compilar
Variáveis
Entrada
Código não recomendado pois não trata o tamanho do input do usuário:
Código recomendado:
Caractere nulo ao final da string deve ser levado em consideração.
System
Argumentos
Repetições
Compilação Explicada
The text was updated successfully, but these errors were encountered: