字串常用操作。。。

#include

#include

#include

char * itoa(int value)

result = (char *)malloc (sizeof(char)*(i+1));

for (j=0;jint i=65;

char *p = itoa(i);

printf("%s/n",p);

free(p);

p=null;

}#include

#include

char *itoa1(int value)  

result = (char*)malloc(sizeof(char)*(i+1));  

for(j=0;jchar*itoa1(int   n,char **temp)  

char *itoa(int value, char *string, int radix)

sign = (radix == 10 && value < 0);

if (sign)

v = -value;

else

v = (unsigned)value;

while (v || tp == tmp)

if (string == 0)

string = (char *)malloc((tp-tmp)+sign+1);

sp = string;

if (sign)

*sp++ = '-';

while (tp > tmp)

*sp++ = *--tp;

*sp = 0;

return string;

}char *ltoa(long value, char *string, int radix)

sign = (radix == 10 && value < 0);

if (sign)

v = -value;

else

v = (unsigned long)value;

while (v || tp == tmp)

if (string == 0)

string = (char *)malloc((tp-tmp)+sign+1);

sp = string;

if (sign)

*sp++ = '-';

while (tp > tmp)

*sp++ = *--tp;

*sp = 0;

return string;

}char *_ultoa(unsigned long value, char *string, int radix)

while (v || tp == tmp)

if (string == 0)

string = (char *)malloc((tp-tmp)+1);

sp = string;

while (tp > tmp)

*sp++ = *--tp;

*sp = 0;

return string;

}int atoi1(const char *src)

return total;

} void main()

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