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Annotation of 42BSD/usr.lib/learn/C/L14.2a, revision 1.1

1.1     ! root        1: #print
        !             2: Using the "getnum" routine on "getnum.o", write a program
        !             3: that reads a list of positive numbers and prints their sum.  Stop reading
        !             4: numbers when "getnum" returns a negative or zero value.
        !             5: Compile and test your program; then type "ready".
        !             6: #once #create Ref
        !             7: 5 43 293 400 75 832 903 33
        !             8: #once cp %s/getnum.o .
        !             9: #user
        !            10: a.out <Ref >xxx
        !            11: grep 2584 xxx >/dev/null
        !            12: #succeed
        !            13: /* Read numbers and count */
        !            14: main()
        !            15: {
        !            16:        int s, n;
        !            17: 
        !            18:        s = 0;
        !            19:        while ((n=getnum()) > 0)
        !            20:                s += n;
        !            21:        printf("Sum is %d\n", s);
        !            22: }
        !            23: #log
        !            24: #next
        !            25: 14.2b 5
        !            26: 15.1a 10

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