Convert char * to short and char

char * x="a"; how would i convert it to char y='a';

also if i have a short char * a="100" how can i conv开发者_如何学Goert it to short b=100

thanks

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char * x = "a";
char y = *x; //or x[0]


char * a = "100";
short b = atoi(a);

Note that assigning return value of atoi to a short might lead to overflow.

Also read why strtol is preferred over atoi for string to number conversions.

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Assuming that's all you wanted to do and didn't care about error checking:

char y= *x;
short b= atoi(a);

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• A char * can be used as an array of chars. To get the first letter, use char y = x[0]
• A string can be converted to a number using the function atoi