Write the program exp3_2.c, first define a function, its prototype is: void DrawPic(int n, char c); the function is: print an isosceles triangle composed of characters c in n lines. Three calls are given in the main function, and 7 lines of '*',

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Write the program exp3_2.c, first define a function, its prototype is: void DrawPic(int n, char c); the function is: print an isosceles triangle composed of characters c in n lines. Three calls are given in the main function, and 7 lines of '*',

The prototype of the function is: void myjoin(char *s,char *t); its function is to connect the t string to the back of the s string. The main function for testing is shown below, please make the function myjoin.

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