Write a macro to find the sum of n numbers. 7m Jun2007 Code: #include<stdio.h> # define SUM(n) ( (n * (n+1)) / 2 ) void main() { int num; clrscr(); printf(” Enter number : “); scanf(“%d”,&num); printf(“\n Sum of n numbers : %d “,SUM(num)); getch(); } [codesyntax lang=”c”] c#include<stdio.h> # define SUM(n) ( (n *… Read More »
Write a program in C, to copy file1 to another file2 in the same directory. 7m Jun2007 Code: #include<stdio.h> void main() { int ch,size=0; FILE *fp1; FILE *fp2; clrscr(); if((fp1=fopen(“readme.txt”,”r”))==NULL) { printf(“FILE DOES NOT EXIST\n”); exit(0); } if((fp2=fopen(“duplicate.txt”,”w”))==NULL) { printf(“FILE CAN NOT BE CREATED\n”); exit(0); } while(!feof(fp1)) { ch=getc(fp1); putc(ch,fp2); size++; } fclose(fp1); fclose(fp2); printf(”… Read More »
Draw a flow chart and write a program in C to sort a given list of numbers. 7m Jun2007 Flowchart: Code: #include<stdio.h> void main() { int I,J,Temp,List[]={6,3,0,4,8,2,5,9,1,7}; clrscr(); printf(“List Before Sorting :\n”); for(J=0;J<10;J++) { printf(“%d “,List[J]); } for(I=0;I<10;I++) { for(J=0;J<=I;J++) { if(List[J]>List[I]) { Temp=List[I]; List[I]=List[J]; List[J]=Temp; } } } printf(“\nList Before Sorting :\n”); for(J=0;J<10;J++)… Read More »
Explain various types of storage classes in C with example for each. 8m Jun2007 To store data inside the computer we need to first identify the type of data elements we need in our program. There are several different types of data, which may be represented differently within the computer memory. The data type specifies… Read More »
Explain use of comma operator in C with the help of an example. 5m Jun2007 Comma Operator in C A comma operator is used to separate a pair of expressions. A pair of expressions separated by a comma is evaluated left to right, and the type and value of the result are the value of… Read More »
Write a program to count the number of characters and words in a given file. 10m Jun2007 #include<stdio.h> #include<process.h> void main() { FILE *fp; int chr=0,wrd=1,str; clrscr(); if((fp=fopen(“test.txt”,”r”))== NULL) { printf(“File does not exist\n”); exit(0); } while(!(feof(fp))) { str=fgetc(fp); if(str==’ ‘) wrd++; chr++; } printf(“The number of characters in file :%d\n”,chr); printf(“The number of words… Read More »