29 lines
549 B
C
29 lines
549 B
C
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#include "string.h"
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#include "math.h"
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void itoa(int i, char *a){
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// Check if lower than 0
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char neg=0;
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if(i<0){
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neg=1;
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i=-i;
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a[0]='-';
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}
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// Count number of digits
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int len=1;
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while(i/pow(10,len)>=1)
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{
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len++;
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}
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// Build string
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int max_pow=len-1;
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for(int j=0;j<=max_pow;j++){
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int cur_pow=pow(10,max_pow-j);
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char digit=i/cur_pow;
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a[j+neg]='0'+digit;
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i=i-digit*cur_pow; // Remove first digits (most significant)
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}
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a[len+neg]='\0';
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}
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