C program to Convert Decimal to Hexadecimal

 

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/*     Write a program to convert a decimal number to its
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    equivalent hexadecimal number.    */
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#include <stdio.h>
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main()
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{
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unsigned long dec;
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int a[25],c=0,i;
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clrscr();
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printf("\nENTER A DECIMAL NUMBER: ");
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scanf("%lu",&dec);
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printf("\n%lu IN HEXADECIMAL FORMAT: ",dec);
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while(dec>0)
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{
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a[c]=dec%16;
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dec=dec/16;
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c++;
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}
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for(i=c-1;i>=0;i--)
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{
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if(a[i]>=10)
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printf("%c",a[i]+55);
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else
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printf("%d",a[i]);
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}
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getch();
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}}

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