int main(void) { int reminaining_time = 60; while (reminaining_time > 0) { --reminaining_time; system("clear"); // ou system("cls"); printf("%i"\n, reminaining_time); } return 0; }
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Posez votre question#include <sys/time.h> #include <sys/types.h> #include #include <stdio.h> int waitForStdin(int seconds) { fd_set set; struct timeval timeout = { seconds, 0 }; FD_ZERO(&set); FD_SET(0, &set); return select(1, &set, NULL, NULL, &timeout) == 1; } int main(void) { int val = 0; printf("Enter a value:\n"); if(!waitForStdin(3)) printf("Timeout after 3 seconds!\n"); else { scanf("%d", &val); printf("Value is: %d\n", val); } return 0; }