Compilation process in C program There are four phases for a c program to be execute, 1.pre-processor 2.compiler 3.assembler 4.linker let’s start with the first one, #Pre-Processor- The pre-processor removes the comments and include header files in source code, replace … Continue reading →

Introduction to C:- C is a general purpose high level programming language used to develop portable applications and firmware. It is originally designed to develop system software and operating systems. C was invented by Dennis’s Ritchie at bell labs in … Continue reading →

  Gcc compiler Compilation Process: Any c file, a user wants to compile is not directly compiled. For example, there is c file having a name hello.c, this hello.c file is not directly provided to the compiler. Hello.c file first … Continue reading →

Compiler is a software ,which is use for converting the code language to machine language. the c programe are work in 5 process- Preprocessor compiler assembler linker loader Preprocessor-In the preprocessor a preprocessor directive (#) and a header file (stdio.h) … Continue reading →

A function pointer (or subroutine pointer or procedure pointer) is a type of pointer supported by third-generation programming languages (such as PL/I, COBOL, Fortran,[1] dBASE dBL, and C) and object-oriented programming languages (such as C++ and D).[2] Instead of referring … Continue reading →

The .bss segment stores all uninitialized global, static, and external variables (declared with extern keyword). Global, external, and static variable are by default initialized to zero. This section occupies no actual space in the object file. it is merely a … Continue reading →

#include #include int main() { int r,c,k; printf(“enter the size of rows\n”); scanf(“%d”,&r); printf(“enter the size of columns\n”); scanf(“%d”,&c); int **a,**b,**d,i,j; a=(int **)malloc(sizeof(int*)*3); if(!a) { perror(“malloc”); goto x; } for(i=0;i<3;i++) *(a+i)=(int *)malloc(sizeof(int)*3); if(!(*(a+i))) { perror("malloc"); goto x; } b=(int **)malloc(sizeof(int*)*3); … Continue reading →

dandling pointer is a pointer which pointing to non existing memory location. when a object is deleted or de allocated without modifying the value of the pointer that time dangling pointer arise. uninitialized pointer are known as wild pointer beacause … Continue reading →

code : #include<stdio.h> #include<stdlib.h> int main() { system(“clear”); int r,c,i,j,a[10][10],b[10][10],d[10][10]; printf(“Enter Row\n”); scanf(“%d”,&r); printf(“Enter Column\n”); scanf(“%d”,&c); printf(“Enter Element of Matrix1\n”); for(i=0;i<r;i++) { for(j=0;j<c;j++) { scanf(“%d”,&a[i][j]); } } printf(“Enter Element of Matrix2\n”); for(i=0;i<r;i++) { for(j=0;j<c;j++) { scanf(“%d”,&b[i][j]); } } for(i=0;i<r;i++) { … Continue reading →

CODE: #include<stdio.h> int main() { int n; printf(“Enter a value\n”); scanf(“%d”,&n); if((n &(n-1))==0) printf(“no. is power of 2\n”); else printf(“no. is not power of 2\n”); return 0; }

CODE: #include<stdio.h> int main() { int n,r=0,num; printf(“Enter a number:\n”); scanf(“%d”,&n); num=n; while(n!=0) { r=r*10; r=r+n%10; n=n/10; } printf(“Reverse number is %d\n”,r); if(num==r) printf(“Palindrome number\n”); else printf(“Not a Palindrome\n”); return 0; }

CODE: #include<stdio.h> int main() { int i,j,k,n,space,temp; printf(“enter value of n\n”); scanf(“%d”,&n); temp=n; for(i=1;i<=n;i++) { for(j=i;j<n;j++) { printf(” “); } for(k=1;k<(2*i);k++) { printf(“*”); } printf(“\n”); } temp=1; for(i=n-1;i>=1;i–) { for(j=1;j<=temp;j++) { printf(” “); } temp++; for(k=1;k<(i*2);k++) { printf(“*”); } printf(“\n”); … Continue reading →