mirror of https://github.com/t1meshift/os_labs.git
35 lines
761 B
C
35 lines
761 B
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <signal.h>
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void on_sigsegv() {
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printf("SIGSEGV\nWrite access to `char* a = \"abc\"` gives UB.\n");
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exit(0);
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}
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int main() {
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struct sigaction action;
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memset(&action, 0, sizeof(action));
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action.sa_flags = SA_SIGINFO;
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action.sa_sigaction = on_sigsegv;
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sigaction(SIGSEGV, &action, NULL);
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/* Assume name shorter than 20 chars. */
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char name[20];
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puts("Enter name: ");
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scanf("%19s", name);
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printf("Hello, %s.\n\n\tNice to see you.\n", name);
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puts("Enter name: ");
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scanf("%19s", name);
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printf("Hello, %s.\n\n\tNice to see you.\n", name);
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char *name1 = "Anna";
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char a_letter = name1[0];
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name1[0] = name1[3];
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name1[3] = a_letter;
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puts(name1);
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return 0;
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}
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