Programming And Tech.

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#include<stdio.h> #include<conio.h> void main() { int n,s=0,i; clrscr(); printf("ENter the number\n"); scanf("%d",&n); for(i=1;i<n;i++) { if((n%i)==0) { printf("Factors of %d=%d\n",n,i); s=i+s; } } if(s==n) printf("Number is perfect\n"); if(s!=n) printf("Number is not perfect\n"); getch(); }

#include<stdio.h> #include<conio.h> void main() { int n1,n,s=0,a; clrscr(); printf("Enter the number\n"); scanf("%d",&n); n1=n; while(n>0) { a=n%10; n=n/10; s=(10*s)+a; } if(n1==s) printf("Given number is palindrome\n"); else printf("Given number is not palindrome\n"); getch(); }

#include<stdio.h> #include<conio.h> void main() { int a[3][3],b[3][3],c[3][3],j,i,k; clrscr(); printf("Enter a 3*3 matrix\n"); for(i=0;i<3;i++) { for(j=0;j<3;j++) { scanf("%d",&a[i][j]); } } printf("Enter a second 3*3 matrix\n"); for(i=0;i<3;i++) { for(j=0;j<3;j++) { scanf("%d",&b[i][j]); } } for(i=0;i<3;i++) { for(j=0;j<3;j++) { c[i][j]=0; } } for(i=0;i<3;i++) { for(j=0;j<3;j++) { for(k=0;k<3;k++) { c[i][j]=c[i][j]+a[i][k]*b[k][j]; } } } printf("Matrix multiplication is-\n"); for(i=0;i<3;i++) { for(j=0;j<3;j++) { printf("%d ",c[i][j]); } printf("\n"); } getch(); }

#include<stdio.h> #include<conio.h> #include<string.h> void main() { char str[20]; int i; clrscr(); gets(str); for(i=0;str[i]!='\0';i++) { if(str[i]>=65&&str[i]<=90) str[i]=str[i]+32; else if(str[i]>=97&&str[i]<=122) str[i]=str[i]-32; } puts(str); getch(); }

#include<stdio.h> #include<conio.h> void main() { char str[50]; int l=0,i; printf("enter string\n"); gets(str); i=0; while(str[i]!='\0') { l++; i++; } printf("Number of character=%d\n",l); getch(); }