8000 Sample Pointer Demo Created · sbccas/c-programming-tutorials@3d8d64f · GitHub
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Sample Pointer Demo Created
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4 files changed

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‎.vscode/settings.json

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -33,6 +33,7 @@
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"CP5CharArrayDemo.C": "cpp",
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"CP5CharacterArrayDemo.C": "cpp",
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"CPsizeofDatatypes.C": "cpp",
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"CP5PointersDemo.C": "cpp"
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"CP5PointersDemo.C": "cpp",
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"deletepointer.C": "cpp"
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}
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}

‎3_Programs/CP5PointersDemo.C

Lines changed: 17 additions & 13 deletions
Original file line numberDiff line numberDiff line change
@@ -16,7 +16,7 @@ long long d=9879879870;
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printf("Address of int i=%d, data=%d\n",&i,i);
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printf("Address of float f=%d, data=%f\n",&f,f);
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printf("Address of char c=%d, data=%c\n",&c,c);
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printf("Address of double d=%d, data=%lld\n",&d,d);
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printf("Address of long long d=%d, data=%lld\n",&d,d);
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//Print same output using Pointers
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//Here comes pointers in Action:
@@ -28,27 +28,31 @@ printf("Address of double d=%d, data=%lld\n",&d,d);
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you use the asterisk (*) symbol before the variable name.
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For example:
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int *ptr; declares a pointer named ptr that can point to an integer.*/
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int *ptri; //Pointer to integer
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float *ptrf; //Pointer to float
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char *ptrc; //Pointer to char
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long long *ptrl; //Pointer to long long
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int *ptrii; //Pointer to integer
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float *ptrff; //Pointer to float
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char *ptrcc; //Pointer to char
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long long *ptrll; //Pointer to long long
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/*Initialization of pointers
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Address-of Operator (&): To get the memory address of a variable,
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you use the & operator.
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For example: int x = 10; int *ptr = &x;
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sets the pointer ptr to hold the memory address of the variable x.*/
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ptri = &i;
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ptrf = &f;
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ptrc = &c;
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ptrl = &d;
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printf("Address Data stored in ptri=%d\n",ptri);
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printf("Address Data stored in ptrf=%f\n",ptrf);
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printf("Address Data stored in ptrc=%c\n",ptrc);
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printf("Address Data stored in ptrl=%lld\n",ptrl);
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ptrii = &i;
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ptrff = &f;
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ptrcc = &c;
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ptrll = &d;
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printf("Address Data stored in ptri=%d\n",ptrii);
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printf("Address Data stored in ptrf=%d\n",ptrff);
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printf("Address Data stored in ptrc=%d\n",ptrcc);
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printf("Address Data stored in ptrl=%d\n",ptrll);
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/*Dereferencing (*): To access the value a pointer is pointing to,
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you use the * operator.
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For instance: int y = *ptr; would assign the value of x
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(since ptr is pointing to x) to the variable y.
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*/
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printf("Data pointed by ptrii = %d\n",*ptrii);
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printf("Data pointed by ptrff = %f\n",*ptrff);
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printf("Data pointed by ptrii = %c\n",*ptrcc);
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printf("Data pointed by ptrii = %lld\n",*ptrll);
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}

‎3_Programs/CP5PointersDemo.exe

512 Bytes
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‎3_Programs/tempCodeRunnerFile.C

Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,2 +1 @@
1-
printf("Enter data in Character Array1: using scanf\n");
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scanf("%s",carray);
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p

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