48 lines
927 B
C
48 lines
927 B
C
#include <stdlib.h>
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jmp_buf env;
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main()
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{
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puts("Example of using setjmp and longjmp");
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for (;;) {
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switch (setjmp(env)) {
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case 0: func1(3);
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case 1: puts("returned from func1"); break;
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case 2: puts("returned from func2"); func1(1);
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case 3: puts("returned from func3"); func1(2);
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default: puts("never prints this message");
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}
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puts("----------------------------");
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}
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exit(0);
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}
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func1(val)
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int val;
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{
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puts("inside func1");
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if (val == 1) longjmp(env, 1);
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else func2(val);
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puts("never prints this message");
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}
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func2(val)
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int val;
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{
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puts("inside func2");
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if (val == 2) longjmp(env, 2);
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else func3(val);
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puts("never prints this message");
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}
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func3(val)
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int val;
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{
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puts("inside func3");
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longjmp(env, 3);
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puts("never prints this message");
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}
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