2/2/2022 10:40

p1debuglog.txt

@@ -0,0 +1,69 @@
+ gdb a.out
+GNU gdb (Ubuntu 8.1.1-0ubuntu1) 8.1.1
+Copyright (C) 2018 Free Software Foundation, Inc.
+License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
+and "show warranty" for details.
+This GDB was configured as "x86_64-linux-gnu".
+Type "show configuration" for configuration details.
+For bug reporting instructions, please see:
+<http://www.gnu.org/software/gdb/bugs/>.
+Find the GDB manual and other documentation resources online at:
+<http://www.gnu.org/software/gdb/documentation/>.
+For help, type "help".
+Type "apropos word" to search for commands related to "word"...
+Reading symbols from a.out...done.
+(gdb) b main
+Breakpoint 1 at 0x7fc: file p1final.c, line 16.
+(gdb) r
+Starting program: /home/runner/pps-IA1-practice-2/a.out 
+warning: Error disabling address space randomization: Operation not permitted
+
+Breakpoint 1, main () at p1final.c:16
+16  {
+(gdb) s
+18    input(&a,&b);
+(gdb) s
+input (a=0x7fff68a0d02c, b=0x7fff68a0d030) at p1final.c:4
+4     printf("enter the 2 numbers\n");
+(gdb) n
+enter the 2 numbers
+5     scanf("%d%d",&*a,&*b);
+(gdb) n
+3
+6
+6   }
+(gdb) p a
+$1 = (int *) 0x7fff68a0d02c
+(gdb) p b
+$2 = (int *) 0x7fff68a0d030
+(gdb) n
+main () at p1final.c:19
+19    add(a,b,&sum);
+(gdb) p a
+$3 = 3
+(gdb) p b
+$4 = 6
+(gdb) s
+add (a=3, b=6, sum=0x7fff68a0d034) at p1final.c:9
+9     *sum=a+b;
+(gdb) n
+10  }
+(gdb) n
+main () at p1final.c:20
+20    output(a,b,sum);
+(gdb) p sum
+$5 = 9
+(gdb) s
+output (a=3, b=6, sum=9) at p1final.c:13
+13    printf("sum of %d + %d is %d",a,b,sum);
+(gdb) n
+14  }
+(gdb) n
+main () at p1final.c:21
+21  }
+(gdb) c
+Continuing.
+sum of 3 + 6 is 9[Inferior 1 (process 112) exited normally]
+(gdb) q

p1final.c

@@ -0,0 +1,21 @@
+#include <stdio.h>
+void input(int *a,int *b)
+{
+  printf("enter the 2 numbers\n");
+  scanf("%d%d",&*a,&*b);
+}
+void add(int a,int b,int *sum)
+{
+  *sum=a+b;
+}
+void output(int a,int b,int sum)
+{
+  printf("sum of %d + %d is %d",a,b,sum);
+}
+int main()
+{
+  int a,b,sum;
+  input(&a,&b);
+  add(a,b,&sum);
+  output(a,b,sum);
+}

p1original.c

@@ -1,2 +1,21 @@
-
-}
+#include <stdio.h>
+void input(int *a,int *b)
+{
+  printf("enter the 2 numbers\n");
+  scanf("%d%d",&*a,&*b);
+}
+void add(int a,int b,int *sum)
+{
+  *sum=a+b;
+}
+void output(int a,int b,int sum)
+{
+  printf("sum of %d + %d is %d",a,b,sum);
+}
+int main()
+{
+  int a,b,sum;
+  input(&a,&b);
+  add(a,b,&sum);
+  output(a,b,sum);
+}

p2debuglog.txt

@@ -0,0 +1,95 @@
+ gdb a.out
+GNU gdb (Ubuntu 8.1.1-0ubuntu1) 8.1.1
+Copyright (C) 2018 Free Software Foundation, Inc.
+License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
+and "show warranty" for details.
+This GDB was configured as "x86_64-linux-gnu".
+Type "show configuration" for configuration details.
+For bug reporting instructions, please see:
+<http://www.gnu.org/software/gdb/bugs/>.
+Find the GDB manual and other documentation resources online at:
+<http://www.gnu.org/software/gdb/documentation/>.
+For help, type "help".
+Type "apropos word" to search for commands related to "word"...
+Reading symbols from a.out...done.
+(gdb) b main
+Breakpoint 1 at 0x839: file p2final.c, line 19.
+(gdb) r
+Starting program: /home/runner/pps-IA1-practice-2/a.out 
+warning: Error disabling address space randomization: Operation not permitted
+
+Breakpoint 1, main () at p2final.c:19
+19    int a=input();
+(gdb) s
+input () at p2final.c:3
+3   {
+(gdb) n
+5     printf("enter the number\n");
+(gdb) n
+enter the number
+6     scanf("%d",&a);
+(gdb) n
+90
+7     return a;
+(gdb) n
+8   }
+(gdb) n
+main () at p2final.c:20
+20    int b=input();
+(gdb) p a
+$1 = 90
+(gdb) s
+input () at p2final.c:3
+3   {
+(gdb) n
+5     printf("enter the number\n");
+(gdb) n
+enter the number
+6     scanf("%d",&a);
+(gdb) n
+56
+7     return a;
+(gdb) n
+8   }
+(gdb) n
+main () at p2final.c:21
+21    int c=input();
+(gdb) s
+input () at p2final.c:3
+3   {
+(gdb) n
+5     printf("enter the number\n");
+(gdb) n
+enter the number
+6     scanf("%d",&a);
+(gdb) n
+10
+7     return a;
+(gdb) n
+8   }
+22    int largest=cmp(a,b,c);
+(gdb) s
+cmp (a=90, b=56, c=10) at p2final.c:11
+11    return a>b?a>c?a:c:b>a?b>c?b:c:a;
+(gdb) n
+12  }
+(gdb) n
+main () at p2final.c:23
+23    output(a,b,c,largest);
+(gdb) p largest
+$3 = 90
+(gdb) s
+output (a=90, b=56, c=10, largest=90) at p2final.c:15
+15    printf("the largest number of %d %d and %d is %d\n",a,b,c,largest);
+(gdb) n
+the largest number of 90 56 and 10 is 90
+16  }
+(gdb) n
+main () at p2final.c:24
+24  }
+(gdb) c
+Continuing.
+[Inferior 1 (process 185) exited normally]
+(gdb) q

p2final.c

@@ -0,0 +1,24 @@
+#include <stdio.h>
+int input()
+{
+  int a;
+  printf("enter the number\n");
+  scanf("%d",&a);
+  return a;
+}
+int cmp(int a,int b,int c)
+{
+  return a>b?a>c?a:c:b>a?b>c?b:c:a;
+}
+void output(int a,int b,int c,int largest)
+{
+  printf("the largest number of %d %d and %d is %d\n",a,b,c,largest);
+}
+int main()
+{
+  int a=input();
+  int b=input();
+  int c=input();
+  int largest=cmp(a,b,c);
+  output(a,b,c,largest);
+}

p2original.c

@@ -0,0 +1,37 @@
+#include <stdio.h>
+int input()
+{
+  int a;
+  printf("enter the number\n");
+  scanf("%d",&a);
+  return a;
+}
+int cmp(int a,int b,int c)
+{
+  if(a<b)
+  {
+    if(b<c)
+      return b;
+    else
+      return c;
+  }
+  else if(b<a)
+  {
+    if(a>c)
+      return a;
+    else
+      return c;
+  }
+}
+void output(int a,int b,int c,int largest)
+{
+  printf("the largest number of %d %d and %d is %d\n",a,b,c,largest);
+}
+int main()
+{
+  int a=input();
+  int b=input();
+  int c=input();
+  int largest=cmp(a,b,c);
+  output(a,b,c,largest);
+}

p3debuglog.txt

@@ -0,0 +1,108 @@
+ gdb a.out
+GNU gdb (Ubuntu 8.1.1-0ubuntu1) 8.1.1
+Copyright (C) 2018 Free Software Foundation, Inc.
+License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
+and "show warranty" for details.
+This GDB was configured as "x86_64-linux-gnu".
+Type "show configuration" for configuration details.
+For bug reporting instructions, please see:
+<http://www.gnu.org/software/gdb/bugs/>.
+Find the GDB manual and other documentation resources online at:
+<http://www.gnu.org/software/gdb/documentation/>.
+For help, type "help".
+Type "apropos word" to search for commands related to "word"...
+Reading symbols from a.out...done.
+(gdb) b main
+Breakpoint 1 at 0x83d: file p3final.c, line 23.
+(gdb) r
+Starting program: /home/runner/pps-IA1-practice-2/a.out 
+warning: Error disabling address space randomization: Operation not permitted
+
+Breakpoint 1, main () at p3final.c:23
+23    printf("enter the limit\n");
+(gdb) n
+enter the limit
+24    int n=input_n();
+(gdb) s
+input_n () at p3final.c:3
+3   {
+(gdb) n
+5     scanf("%d",&a);
+(gdb) 3
+Undefined command: "3".  Try "help".
+(gdb) n
+3
+6     return a;
+(gdb) n
+7   }
+(gdb) n
+main () at p3final.c:25
+25    int sum=sum_n(n);
+(gdb) p n
+$1 = 3
+(gdb) s
+sum_n (n=3) at p3final.c:10
+10    int sum=0;
+(gdb) n
+11    for(int i=1;i<=n;i++)
+(gdb) p i
+$2 = 1574748203
+(gdb) n
+12       sum=sum+i;
+(gdb) p i
+$3 = 1
+(gdb) n
+11    for(int i=1;i<=n;i++)
+(gdb) p sum
+$4 = 1
+(gdb) n
+12       sum=sum+i;
+(gdb) p i
+$5 = 2
+(gdb) n
+11    for(int i=1;i<=n;i++)
+(gdb) p sum
+$6 = 3
+(gdb) n
+12       sum=sum+i;
+(gdb) p i
+$7 = 3
+(gdb) n
+11    for(int i=1;i<=n;i++)
+(gdb) n
+13    return sum;
+(gdb) p sum
+$8 = 6
+(gdb) n
+14  }
+(gdb) n
+main () at p3final.c:26
+26    output(n,sum);
+(gdb) s
+output (n=3, sum=6) at p3final.c:17
+17    for(int i=1;i<n;i++)
+(gdb) n
+18       printf("%d+",i);
+(gdb) p i
+$9 = 1
+(gdb) n
+17    for(int i=1;i<n;i++)
+(gdb) n
+18       printf("%d+",i);
+(gdb) p i
+$10 = 2
+(gdb) n
+17    for(int i=1;i<n;i++)
+(gdb) n
+19    printf("%d=%d",n,sum);
+(gdb) n
+20  }
+(gdb) n
+main () at p3final.c:27
+27  }
+(gdb) c
+Continuing.
+1+2+3=6[Inferior 1 (process 44) exited normally]
+(gdb) q