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#include <stdio.h> /* atoi函數(shù):將字符串s轉(zhuǎn)換為相應(yīng)的整型數(shù) */ int atoi(char s[]) { int i, n; n = 0; for(i = 0; s[i] >= '0' && s[i] <= '9'; ++i) n = 10 * n + (s[i] - '0'); return n; } int main(int argc, char *argv[]) { printf("%d\n",atoi("1a2 3")); return 0; } |
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