题解 | #截取字符串#

#import <Foundation/Foundation.h>

int main(int argc, char* argv[]) {
    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];

    char inputStr[1000];
    char num[1000];
    gets(inputStr);
    gets(num);

    NSString* inputOCStr = [NSString stringWithFormat:@"%s", inputStr];
    NSString *ocNum = [NSString stringWithFormat:@"%s", num];
    NSString* newStr = [inputOCStr substringToIndex:[ocNum integerValue]];
    printf("%@", newStr);

    [pool drain];
    return 0;
}